3 * Copyright (c) 1991-2000, Larry Wall
5 * You may distribute under the terms of either the GNU General Public
6 * License or the Artistic License, as specified in the README file.
11 * "I wonder what the Entish is for 'yes' and 'no'," he thought.
19 #define SV_CHECK_THINKFIRST(sv) if (SvTHINKFIRST(sv)) sv_force_normal(sv)
21 static void do_report_used(pTHXo_ SV *sv);
22 static void do_clean_objs(pTHXo_ SV *sv);
23 #ifndef DISABLE_DESTRUCTOR_KLUDGE
24 static void do_clean_named_objs(pTHXo_ SV *sv);
26 static void do_clean_all(pTHXo_ SV *sv);
29 * "A time to plant, and a time to uproot what was planted..."
34 SvANY(p) = (void *)PL_sv_root; \
35 SvFLAGS(p) = SVTYPEMASK; \
40 /* sv_mutex must be held while calling uproot_SV() */
41 #define uproot_SV(p) \
44 PL_sv_root = (SV*)SvANY(p); \
66 if (PL_debug & 32768) \
76 if (PL_debug & 32768) {
81 for (sva = PL_sv_arenaroot; sva; sva = (SV *) SvANY(sva)) {
83 svend = &sva[SvREFCNT(sva)];
84 if (p >= sv && p < svend)
88 if (ckWARN_d(WARN_INTERNAL))
89 Perl_warner(aTHX_ WARN_INTERNAL,
90 "Attempt to free non-arena SV: 0x%"UVxf,
98 #else /* ! DEBUGGING */
100 #define del_SV(p) plant_SV(p)
102 #endif /* DEBUGGING */
105 Perl_sv_add_arena(pTHX_ char *ptr, U32 size, U32 flags)
110 Zero(ptr, size, char);
112 /* The first SV in an arena isn't an SV. */
113 SvANY(sva) = (void *) PL_sv_arenaroot; /* ptr to next arena */
114 SvREFCNT(sva) = size / sizeof(SV); /* number of SV slots */
115 SvFLAGS(sva) = flags; /* FAKE if not to be freed */
117 PL_sv_arenaroot = sva;
118 PL_sv_root = sva + 1;
120 svend = &sva[SvREFCNT(sva) - 1];
123 SvANY(sv) = (void *)(SV*)(sv + 1);
124 SvFLAGS(sv) = SVTYPEMASK;
128 SvFLAGS(sv) = SVTYPEMASK;
131 /* sv_mutex must be held while calling more_sv() */
138 sv_add_arena(PL_nice_chunk, PL_nice_chunk_size, 0);
139 PL_nice_chunk = Nullch;
142 char *chunk; /* must use New here to match call to */
143 New(704,chunk,1008,char); /* Safefree() in sv_free_arenas() */
144 sv_add_arena(chunk, 1008, 0);
151 S_visit(pTHX_ SVFUNC_t f)
157 for (sva = PL_sv_arenaroot; sva; sva = (SV*)SvANY(sva)) {
158 svend = &sva[SvREFCNT(sva)];
159 for (sv = sva + 1; sv < svend; ++sv) {
160 if (SvTYPE(sv) != SVTYPEMASK)
167 Perl_sv_report_used(pTHX)
169 visit(do_report_used);
173 Perl_sv_clean_objs(pTHX)
175 PL_in_clean_objs = TRUE;
176 visit(do_clean_objs);
177 #ifndef DISABLE_DESTRUCTOR_KLUDGE
178 /* some barnacles may yet remain, clinging to typeglobs */
179 visit(do_clean_named_objs);
181 PL_in_clean_objs = FALSE;
185 Perl_sv_clean_all(pTHX)
187 PL_in_clean_all = TRUE;
189 PL_in_clean_all = FALSE;
193 Perl_sv_free_arenas(pTHX)
197 XPV *arena, *arenanext;
199 /* Free arenas here, but be careful about fake ones. (We assume
200 contiguity of the fake ones with the corresponding real ones.) */
202 for (sva = PL_sv_arenaroot; sva; sva = svanext) {
203 svanext = (SV*) SvANY(sva);
204 while (svanext && SvFAKE(svanext))
205 svanext = (SV*) SvANY(svanext);
208 Safefree((void *)sva);
211 for (arena = PL_xiv_arenaroot; arena; arena = arenanext) {
212 arenanext = (XPV*)arena->xpv_pv;
215 PL_xiv_arenaroot = 0;
217 for (arena = PL_xnv_arenaroot; arena; arena = arenanext) {
218 arenanext = (XPV*)arena->xpv_pv;
221 PL_xnv_arenaroot = 0;
223 for (arena = PL_xrv_arenaroot; arena; arena = arenanext) {
224 arenanext = (XPV*)arena->xpv_pv;
227 PL_xrv_arenaroot = 0;
229 for (arena = PL_xpv_arenaroot; arena; arena = arenanext) {
230 arenanext = (XPV*)arena->xpv_pv;
233 PL_xpv_arenaroot = 0;
235 for (arena = (XPV*)PL_xpviv_arenaroot; arena; arena = arenanext) {
236 arenanext = (XPV*)arena->xpv_pv;
239 PL_xpviv_arenaroot = 0;
241 for (arena = (XPV*)PL_xpvnv_arenaroot; arena; arena = arenanext) {
242 arenanext = (XPV*)arena->xpv_pv;
245 PL_xpvnv_arenaroot = 0;
247 for (arena = (XPV*)PL_xpvcv_arenaroot; arena; arena = arenanext) {
248 arenanext = (XPV*)arena->xpv_pv;
251 PL_xpvcv_arenaroot = 0;
253 for (arena = (XPV*)PL_xpvav_arenaroot; arena; arena = arenanext) {
254 arenanext = (XPV*)arena->xpv_pv;
257 PL_xpvav_arenaroot = 0;
259 for (arena = (XPV*)PL_xpvhv_arenaroot; arena; arena = arenanext) {
260 arenanext = (XPV*)arena->xpv_pv;
263 PL_xpvhv_arenaroot = 0;
265 for (arena = (XPV*)PL_xpvmg_arenaroot; arena; arena = arenanext) {
266 arenanext = (XPV*)arena->xpv_pv;
269 PL_xpvmg_arenaroot = 0;
271 for (arena = (XPV*)PL_xpvlv_arenaroot; arena; arena = arenanext) {
272 arenanext = (XPV*)arena->xpv_pv;
275 PL_xpvlv_arenaroot = 0;
277 for (arena = (XPV*)PL_xpvbm_arenaroot; arena; arena = arenanext) {
278 arenanext = (XPV*)arena->xpv_pv;
281 PL_xpvbm_arenaroot = 0;
283 for (arena = (XPV*)PL_he_arenaroot; arena; arena = arenanext) {
284 arenanext = (XPV*)arena->xpv_pv;
290 Safefree(PL_nice_chunk);
291 PL_nice_chunk = Nullch;
292 PL_nice_chunk_size = 0;
298 Perl_report_uninit(pTHX)
301 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit,
302 " in ", PL_op_desc[PL_op->op_type]);
304 Perl_warner(aTHX_ WARN_UNINITIALIZED, PL_warn_uninit, "", "");
316 * See comment in more_xiv() -- RAM.
318 PL_xiv_root = *(IV**)xiv;
320 return (XPVIV*)((char*)xiv - STRUCT_OFFSET(XPVIV, xiv_iv));
324 S_del_xiv(pTHX_ XPVIV *p)
326 IV* xiv = (IV*)((char*)(p) + STRUCT_OFFSET(XPVIV, xiv_iv));
328 *(IV**)xiv = PL_xiv_root;
339 New(705, ptr, 1008/sizeof(XPV), XPV);
340 ptr->xpv_pv = (char*)PL_xiv_arenaroot; /* linked list of xiv arenas */
341 PL_xiv_arenaroot = ptr; /* to keep Purify happy */
344 xivend = &xiv[1008 / sizeof(IV) - 1];
345 xiv += (sizeof(XPV) - 1) / sizeof(IV) + 1; /* fudge by size of XPV */
347 while (xiv < xivend) {
348 *(IV**)xiv = (IV *)(xiv + 1);
362 PL_xnv_root = *(NV**)xnv;
364 return (XPVNV*)((char*)xnv - STRUCT_OFFSET(XPVNV, xnv_nv));
368 S_del_xnv(pTHX_ XPVNV *p)
370 NV* xnv = (NV*)((char*)(p) + STRUCT_OFFSET(XPVNV, xnv_nv));
372 *(NV**)xnv = PL_xnv_root;
383 New(711, ptr, 1008/sizeof(XPV), XPV);
384 ptr->xpv_pv = (char*)PL_xnv_arenaroot;
385 PL_xnv_arenaroot = ptr;
388 xnvend = &xnv[1008 / sizeof(NV) - 1];
389 xnv += (sizeof(XPVIV) - 1) / sizeof(NV) + 1; /* fudge by sizeof XPVIV */
391 while (xnv < xnvend) {
392 *(NV**)xnv = (NV*)(xnv + 1);
406 PL_xrv_root = (XRV*)xrv->xrv_rv;
412 S_del_xrv(pTHX_ XRV *p)
415 p->xrv_rv = (SV*)PL_xrv_root;
424 register XRV* xrvend;
426 New(712, ptr, 1008/sizeof(XPV), XPV);
427 ptr->xpv_pv = (char*)PL_xrv_arenaroot;
428 PL_xrv_arenaroot = ptr;
431 xrvend = &xrv[1008 / sizeof(XRV) - 1];
432 xrv += (sizeof(XPV) - 1) / sizeof(XRV) + 1;
434 while (xrv < xrvend) {
435 xrv->xrv_rv = (SV*)(xrv + 1);
449 PL_xpv_root = (XPV*)xpv->xpv_pv;
455 S_del_xpv(pTHX_ XPV *p)
458 p->xpv_pv = (char*)PL_xpv_root;
467 register XPV* xpvend;
468 New(713, xpv, 1008/sizeof(XPV), XPV);
469 xpv->xpv_pv = (char*)PL_xpv_arenaroot;
470 PL_xpv_arenaroot = xpv;
472 xpvend = &xpv[1008 / sizeof(XPV) - 1];
474 while (xpv < xpvend) {
475 xpv->xpv_pv = (char*)(xpv + 1);
488 xpviv = PL_xpviv_root;
489 PL_xpviv_root = (XPVIV*)xpviv->xpv_pv;
495 S_del_xpviv(pTHX_ XPVIV *p)
498 p->xpv_pv = (char*)PL_xpviv_root;
506 register XPVIV* xpviv;
507 register XPVIV* xpvivend;
508 New(714, xpviv, 1008/sizeof(XPVIV), XPVIV);
509 xpviv->xpv_pv = (char*)PL_xpviv_arenaroot;
510 PL_xpviv_arenaroot = xpviv;
512 xpvivend = &xpviv[1008 / sizeof(XPVIV) - 1];
513 PL_xpviv_root = ++xpviv;
514 while (xpviv < xpvivend) {
515 xpviv->xpv_pv = (char*)(xpviv + 1);
528 xpvnv = PL_xpvnv_root;
529 PL_xpvnv_root = (XPVNV*)xpvnv->xpv_pv;
535 S_del_xpvnv(pTHX_ XPVNV *p)
538 p->xpv_pv = (char*)PL_xpvnv_root;
546 register XPVNV* xpvnv;
547 register XPVNV* xpvnvend;
548 New(715, xpvnv, 1008/sizeof(XPVNV), XPVNV);
549 xpvnv->xpv_pv = (char*)PL_xpvnv_arenaroot;
550 PL_xpvnv_arenaroot = xpvnv;
552 xpvnvend = &xpvnv[1008 / sizeof(XPVNV) - 1];
553 PL_xpvnv_root = ++xpvnv;
554 while (xpvnv < xpvnvend) {
555 xpvnv->xpv_pv = (char*)(xpvnv + 1);
568 xpvcv = PL_xpvcv_root;
569 PL_xpvcv_root = (XPVCV*)xpvcv->xpv_pv;
575 S_del_xpvcv(pTHX_ XPVCV *p)
578 p->xpv_pv = (char*)PL_xpvcv_root;
586 register XPVCV* xpvcv;
587 register XPVCV* xpvcvend;
588 New(716, xpvcv, 1008/sizeof(XPVCV), XPVCV);
589 xpvcv->xpv_pv = (char*)PL_xpvcv_arenaroot;
590 PL_xpvcv_arenaroot = xpvcv;
592 xpvcvend = &xpvcv[1008 / sizeof(XPVCV) - 1];
593 PL_xpvcv_root = ++xpvcv;
594 while (xpvcv < xpvcvend) {
595 xpvcv->xpv_pv = (char*)(xpvcv + 1);
608 xpvav = PL_xpvav_root;
609 PL_xpvav_root = (XPVAV*)xpvav->xav_array;
615 S_del_xpvav(pTHX_ XPVAV *p)
618 p->xav_array = (char*)PL_xpvav_root;
626 register XPVAV* xpvav;
627 register XPVAV* xpvavend;
628 New(717, xpvav, 1008/sizeof(XPVAV), XPVAV);
629 xpvav->xav_array = (char*)PL_xpvav_arenaroot;
630 PL_xpvav_arenaroot = xpvav;
632 xpvavend = &xpvav[1008 / sizeof(XPVAV) - 1];
633 PL_xpvav_root = ++xpvav;
634 while (xpvav < xpvavend) {
635 xpvav->xav_array = (char*)(xpvav + 1);
638 xpvav->xav_array = 0;
648 xpvhv = PL_xpvhv_root;
649 PL_xpvhv_root = (XPVHV*)xpvhv->xhv_array;
655 S_del_xpvhv(pTHX_ XPVHV *p)
658 p->xhv_array = (char*)PL_xpvhv_root;
666 register XPVHV* xpvhv;
667 register XPVHV* xpvhvend;
668 New(718, xpvhv, 1008/sizeof(XPVHV), XPVHV);
669 xpvhv->xhv_array = (char*)PL_xpvhv_arenaroot;
670 PL_xpvhv_arenaroot = xpvhv;
672 xpvhvend = &xpvhv[1008 / sizeof(XPVHV) - 1];
673 PL_xpvhv_root = ++xpvhv;
674 while (xpvhv < xpvhvend) {
675 xpvhv->xhv_array = (char*)(xpvhv + 1);
678 xpvhv->xhv_array = 0;
688 xpvmg = PL_xpvmg_root;
689 PL_xpvmg_root = (XPVMG*)xpvmg->xpv_pv;
695 S_del_xpvmg(pTHX_ XPVMG *p)
698 p->xpv_pv = (char*)PL_xpvmg_root;
706 register XPVMG* xpvmg;
707 register XPVMG* xpvmgend;
708 New(719, xpvmg, 1008/sizeof(XPVMG), XPVMG);
709 xpvmg->xpv_pv = (char*)PL_xpvmg_arenaroot;
710 PL_xpvmg_arenaroot = xpvmg;
712 xpvmgend = &xpvmg[1008 / sizeof(XPVMG) - 1];
713 PL_xpvmg_root = ++xpvmg;
714 while (xpvmg < xpvmgend) {
715 xpvmg->xpv_pv = (char*)(xpvmg + 1);
728 xpvlv = PL_xpvlv_root;
729 PL_xpvlv_root = (XPVLV*)xpvlv->xpv_pv;
735 S_del_xpvlv(pTHX_ XPVLV *p)
738 p->xpv_pv = (char*)PL_xpvlv_root;
746 register XPVLV* xpvlv;
747 register XPVLV* xpvlvend;
748 New(720, xpvlv, 1008/sizeof(XPVLV), XPVLV);
749 xpvlv->xpv_pv = (char*)PL_xpvlv_arenaroot;
750 PL_xpvlv_arenaroot = xpvlv;
752 xpvlvend = &xpvlv[1008 / sizeof(XPVLV) - 1];
753 PL_xpvlv_root = ++xpvlv;
754 while (xpvlv < xpvlvend) {
755 xpvlv->xpv_pv = (char*)(xpvlv + 1);
768 xpvbm = PL_xpvbm_root;
769 PL_xpvbm_root = (XPVBM*)xpvbm->xpv_pv;
775 S_del_xpvbm(pTHX_ XPVBM *p)
778 p->xpv_pv = (char*)PL_xpvbm_root;
786 register XPVBM* xpvbm;
787 register XPVBM* xpvbmend;
788 New(721, xpvbm, 1008/sizeof(XPVBM), XPVBM);
789 xpvbm->xpv_pv = (char*)PL_xpvbm_arenaroot;
790 PL_xpvbm_arenaroot = xpvbm;
792 xpvbmend = &xpvbm[1008 / sizeof(XPVBM) - 1];
793 PL_xpvbm_root = ++xpvbm;
794 while (xpvbm < xpvbmend) {
795 xpvbm->xpv_pv = (char*)(xpvbm + 1);
802 # define my_safemalloc(s) (void*)safexmalloc(717,s)
803 # define my_safefree(p) safexfree((char*)p)
805 # define my_safemalloc(s) (void*)safemalloc(s)
806 # define my_safefree(p) safefree((char*)p)
811 #define new_XIV() my_safemalloc(sizeof(XPVIV))
812 #define del_XIV(p) my_safefree(p)
814 #define new_XNV() my_safemalloc(sizeof(XPVNV))
815 #define del_XNV(p) my_safefree(p)
817 #define new_XRV() my_safemalloc(sizeof(XRV))
818 #define del_XRV(p) my_safefree(p)
820 #define new_XPV() my_safemalloc(sizeof(XPV))
821 #define del_XPV(p) my_safefree(p)
823 #define new_XPVIV() my_safemalloc(sizeof(XPVIV))
824 #define del_XPVIV(p) my_safefree(p)
826 #define new_XPVNV() my_safemalloc(sizeof(XPVNV))
827 #define del_XPVNV(p) my_safefree(p)
829 #define new_XPVCV() my_safemalloc(sizeof(XPVCV))
830 #define del_XPVCV(p) my_safefree(p)
832 #define new_XPVAV() my_safemalloc(sizeof(XPVAV))
833 #define del_XPVAV(p) my_safefree(p)
835 #define new_XPVHV() my_safemalloc(sizeof(XPVHV))
836 #define del_XPVHV(p) my_safefree(p)
838 #define new_XPVMG() my_safemalloc(sizeof(XPVMG))
839 #define del_XPVMG(p) my_safefree(p)
841 #define new_XPVLV() my_safemalloc(sizeof(XPVLV))
842 #define del_XPVLV(p) my_safefree(p)
844 #define new_XPVBM() my_safemalloc(sizeof(XPVBM))
845 #define del_XPVBM(p) my_safefree(p)
849 #define new_XIV() (void*)new_xiv()
850 #define del_XIV(p) del_xiv((XPVIV*) p)
852 #define new_XNV() (void*)new_xnv()
853 #define del_XNV(p) del_xnv((XPVNV*) p)
855 #define new_XRV() (void*)new_xrv()
856 #define del_XRV(p) del_xrv((XRV*) p)
858 #define new_XPV() (void*)new_xpv()
859 #define del_XPV(p) del_xpv((XPV *)p)
861 #define new_XPVIV() (void*)new_xpviv()
862 #define del_XPVIV(p) del_xpviv((XPVIV *)p)
864 #define new_XPVNV() (void*)new_xpvnv()
865 #define del_XPVNV(p) del_xpvnv((XPVNV *)p)
867 #define new_XPVCV() (void*)new_xpvcv()
868 #define del_XPVCV(p) del_xpvcv((XPVCV *)p)
870 #define new_XPVAV() (void*)new_xpvav()
871 #define del_XPVAV(p) del_xpvav((XPVAV *)p)
873 #define new_XPVHV() (void*)new_xpvhv()
874 #define del_XPVHV(p) del_xpvhv((XPVHV *)p)
876 #define new_XPVMG() (void*)new_xpvmg()
877 #define del_XPVMG(p) del_xpvmg((XPVMG *)p)
879 #define new_XPVLV() (void*)new_xpvlv()
880 #define del_XPVLV(p) del_xpvlv((XPVLV *)p)
882 #define new_XPVBM() (void*)new_xpvbm()
883 #define del_XPVBM(p) del_xpvbm((XPVBM *)p)
887 #define new_XPVGV() my_safemalloc(sizeof(XPVGV))
888 #define del_XPVGV(p) my_safefree(p)
890 #define new_XPVFM() my_safemalloc(sizeof(XPVFM))
891 #define del_XPVFM(p) my_safefree(p)
893 #define new_XPVIO() my_safemalloc(sizeof(XPVIO))
894 #define del_XPVIO(p) my_safefree(p)
897 =for apidoc sv_upgrade
899 Upgrade an SV to a more complex form. Use C<SvUPGRADE>. See
906 Perl_sv_upgrade(pTHX_ register SV *sv, U32 mt)
916 if (mt != SVt_PV && SvREADONLY(sv) && SvFAKE(sv)) {
920 if (SvTYPE(sv) == mt)
926 switch (SvTYPE(sv)) {
947 else if (mt < SVt_PVIV)
964 pv = (char*)SvRV(sv);
984 else if (mt == SVt_NV)
995 del_XPVIV(SvANY(sv));
1005 del_XPVNV(SvANY(sv));
1013 magic = SvMAGIC(sv);
1014 stash = SvSTASH(sv);
1015 del_XPVMG(SvANY(sv));
1018 Perl_croak(aTHX_ "Can't upgrade that kind of scalar");
1023 Perl_croak(aTHX_ "Can't upgrade to undef");
1025 SvANY(sv) = new_XIV();
1029 SvANY(sv) = new_XNV();
1033 SvANY(sv) = new_XRV();
1037 SvANY(sv) = new_XPV();
1043 SvANY(sv) = new_XPVIV();
1053 SvANY(sv) = new_XPVNV();
1061 SvANY(sv) = new_XPVMG();
1067 SvMAGIC(sv) = magic;
1068 SvSTASH(sv) = stash;
1071 SvANY(sv) = new_XPVLV();
1077 SvMAGIC(sv) = magic;
1078 SvSTASH(sv) = stash;
1085 SvANY(sv) = new_XPVAV();
1093 SvMAGIC(sv) = magic;
1094 SvSTASH(sv) = stash;
1100 SvANY(sv) = new_XPVHV();
1108 SvMAGIC(sv) = magic;
1109 SvSTASH(sv) = stash;
1116 SvANY(sv) = new_XPVCV();
1117 Zero(SvANY(sv), 1, XPVCV);
1123 SvMAGIC(sv) = magic;
1124 SvSTASH(sv) = stash;
1127 SvANY(sv) = new_XPVGV();
1133 SvMAGIC(sv) = magic;
1134 SvSTASH(sv) = stash;
1142 SvANY(sv) = new_XPVBM();
1148 SvMAGIC(sv) = magic;
1149 SvSTASH(sv) = stash;
1155 SvANY(sv) = new_XPVFM();
1156 Zero(SvANY(sv), 1, XPVFM);
1162 SvMAGIC(sv) = magic;
1163 SvSTASH(sv) = stash;
1166 SvANY(sv) = new_XPVIO();
1167 Zero(SvANY(sv), 1, XPVIO);
1173 SvMAGIC(sv) = magic;
1174 SvSTASH(sv) = stash;
1175 IoPAGE_LEN(sv) = 60;
1178 SvFLAGS(sv) &= ~SVTYPEMASK;
1184 Perl_sv_backoff(pTHX_ register SV *sv)
1188 char *s = SvPVX(sv);
1189 SvLEN(sv) += SvIVX(sv);
1190 SvPVX(sv) -= SvIVX(sv);
1192 Move(s, SvPVX(sv), SvCUR(sv)+1, char);
1194 SvFLAGS(sv) &= ~SVf_OOK;
1201 Expands the character buffer in the SV. This will use C<sv_unref> and will
1202 upgrade the SV to C<SVt_PV>. Returns a pointer to the character buffer.
1209 Perl_sv_grow(pTHX_ register SV *sv, register STRLEN newlen)
1213 #ifdef HAS_64K_LIMIT
1214 if (newlen >= 0x10000) {
1215 PerlIO_printf(Perl_debug_log,
1216 "Allocation too large: %"UVxf"\n", (UV)newlen);
1219 #endif /* HAS_64K_LIMIT */
1222 if (SvTYPE(sv) < SVt_PV) {
1223 sv_upgrade(sv, SVt_PV);
1226 else if (SvOOK(sv)) { /* pv is offset? */
1229 if (newlen > SvLEN(sv))
1230 newlen += 10 * (newlen - SvCUR(sv)); /* avoid copy each time */
1231 #ifdef HAS_64K_LIMIT
1232 if (newlen >= 0x10000)
1238 if (newlen > SvLEN(sv)) { /* need more room? */
1239 if (SvLEN(sv) && s) {
1240 #if defined(MYMALLOC) && !defined(LEAKTEST)
1241 STRLEN l = malloced_size((void*)SvPVX(sv));
1247 Renew(s,newlen,char);
1250 New(703,s,newlen,char);
1252 SvLEN_set(sv, newlen);
1258 =for apidoc sv_setiv
1260 Copies an integer into the given SV. Does not handle 'set' magic. See
1267 Perl_sv_setiv(pTHX_ register SV *sv, IV i)
1269 SV_CHECK_THINKFIRST(sv);
1270 switch (SvTYPE(sv)) {
1272 sv_upgrade(sv, SVt_IV);
1275 sv_upgrade(sv, SVt_PVNV);
1279 sv_upgrade(sv, SVt_PVIV);
1290 Perl_croak(aTHX_ "Can't coerce %s to integer in %s", sv_reftype(sv,0),
1291 PL_op_desc[PL_op->op_type]);
1294 (void)SvIOK_only(sv); /* validate number */
1300 =for apidoc sv_setiv_mg
1302 Like C<sv_setiv>, but also handles 'set' magic.
1308 Perl_sv_setiv_mg(pTHX_ register SV *sv, IV i)
1315 =for apidoc sv_setuv
1317 Copies an unsigned integer into the given SV. Does not handle 'set' magic.
1324 Perl_sv_setuv(pTHX_ register SV *sv, UV u)
1332 =for apidoc sv_setuv_mg
1334 Like C<sv_setuv>, but also handles 'set' magic.
1340 Perl_sv_setuv_mg(pTHX_ register SV *sv, UV u)
1347 =for apidoc sv_setnv
1349 Copies a double into the given SV. Does not handle 'set' magic. See
1356 Perl_sv_setnv(pTHX_ register SV *sv, NV num)
1358 SV_CHECK_THINKFIRST(sv);
1359 switch (SvTYPE(sv)) {
1362 sv_upgrade(sv, SVt_NV);
1367 sv_upgrade(sv, SVt_PVNV);
1378 Perl_croak(aTHX_ "Can't coerce %s to number in %s", sv_reftype(sv,0),
1379 PL_op_name[PL_op->op_type]);
1383 (void)SvNOK_only(sv); /* validate number */
1388 =for apidoc sv_setnv_mg
1390 Like C<sv_setnv>, but also handles 'set' magic.
1396 Perl_sv_setnv_mg(pTHX_ register SV *sv, NV num)
1403 S_not_a_number(pTHX_ SV *sv)
1409 char *limit = tmpbuf + sizeof(tmpbuf) - 8;
1410 /* each *s can expand to 4 chars + "...\0",
1411 i.e. need room for 8 chars */
1413 for (s = SvPVX(sv); *s && d < limit; s++) {
1415 if (ch & 128 && !isPRINT_LC(ch)) {
1424 else if (ch == '\r') {
1428 else if (ch == '\f') {
1432 else if (ch == '\\') {
1436 else if (isPRINT_LC(ch))
1451 Perl_warner(aTHX_ WARN_NUMERIC,
1452 "Argument \"%s\" isn't numeric in %s", tmpbuf,
1453 PL_op_desc[PL_op->op_type]);
1455 Perl_warner(aTHX_ WARN_NUMERIC,
1456 "Argument \"%s\" isn't numeric", tmpbuf);
1459 /* the number can be converted to integer with atol() or atoll() */
1460 #define IS_NUMBER_TO_INT_BY_ATOL 0x01
1461 #define IS_NUMBER_TO_INT_BY_ATOF 0x02 /* atol() may be != atof() */
1462 #define IS_NUMBER_NOT_IV 0x04 /* (IV)atof() may be != atof() */
1463 #define IS_NUMBER_NEG 0x08 /* not good to cache UV */
1464 #define IS_NUMBER_INFINITY 0x10 /* this is big */
1466 /* Actually, ISO C leaves conversion of UV to IV undefined, but
1467 until proven guilty, assume that things are not that bad... */
1470 Perl_sv_2iv(pTHX_ register SV *sv)
1474 if (SvGMAGICAL(sv)) {
1479 return I_V(SvNVX(sv));
1481 if (SvPOKp(sv) && SvLEN(sv))
1484 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1486 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1492 if (SvTHINKFIRST(sv)) {
1495 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1496 (SvRV(tmpstr) != SvRV(sv)))
1497 return SvIV(tmpstr);
1498 return PTR2IV(SvRV(sv));
1500 if (SvREADONLY(sv) && SvFAKE(sv)) {
1501 sv_force_normal(sv);
1503 if (SvREADONLY(sv) && !SvOK(sv)) {
1505 if (ckWARN(WARN_UNINITIALIZED))
1512 return (IV)(SvUVX(sv));
1519 /* We can cache the IV/UV value even if it not good enough
1520 * to reconstruct NV, since the conversion to PV will prefer
1524 if (SvTYPE(sv) == SVt_NV)
1525 sv_upgrade(sv, SVt_PVNV);
1528 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1529 SvIVX(sv) = I_V(SvNVX(sv));
1531 SvUVX(sv) = U_V(SvNVX(sv));
1534 DEBUG_c(PerlIO_printf(Perl_debug_log,
1535 "0x%"UVxf" 2iv(%"UVuf" => %"IVdf") (as unsigned)\n",
1539 return (IV)SvUVX(sv);
1542 else if (SvPOKp(sv) && SvLEN(sv)) {
1543 I32 numtype = looks_like_number(sv);
1545 /* We want to avoid a possible problem when we cache an IV which
1546 may be later translated to an NV, and the resulting NV is not
1547 the translation of the initial data.
1549 This means that if we cache such an IV, we need to cache the
1550 NV as well. Moreover, we trade speed for space, and do not
1551 cache the NV if not needed.
1553 if (numtype & IS_NUMBER_NOT_IV) {
1554 /* May be not an integer. Need to cache NV if we cache IV
1555 * - otherwise future conversion to NV will be wrong. */
1558 d = Atof(SvPVX(sv));
1560 if (SvTYPE(sv) < SVt_PVNV)
1561 sv_upgrade(sv, SVt_PVNV);
1565 #if defined(USE_LONG_DOUBLE)
1566 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1567 PTR2UV(sv), SvNVX(sv)));
1569 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%g)\n",
1570 PTR2UV(sv), SvNVX(sv)));
1572 if (SvNVX(sv) < (NV)IV_MAX + 0.5)
1573 SvIVX(sv) = I_V(SvNVX(sv));
1575 SvUVX(sv) = U_V(SvNVX(sv));
1580 else { /* The NV may be reconstructed from IV - safe to cache IV,
1581 which may be calculated by atol(). */
1582 if (SvTYPE(sv) < SVt_PVIV)
1583 sv_upgrade(sv, SVt_PVIV);
1585 SvIVX(sv) = Atol(SvPVX(sv));
1586 if (! numtype && ckWARN(WARN_NUMERIC))
1592 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1594 if (SvTYPE(sv) < SVt_IV)
1595 /* Typically the caller expects that sv_any is not NULL now. */
1596 sv_upgrade(sv, SVt_IV);
1599 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2iv(%"IVdf")\n",
1600 PTR2UV(sv),SvIVX(sv)));
1601 return SvIsUV(sv) ? (IV)SvUVX(sv) : SvIVX(sv);
1605 Perl_sv_2uv(pTHX_ register SV *sv)
1609 if (SvGMAGICAL(sv)) {
1614 return U_V(SvNVX(sv));
1615 if (SvPOKp(sv) && SvLEN(sv))
1618 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1620 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1626 if (SvTHINKFIRST(sv)) {
1629 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1630 (SvRV(tmpstr) != SvRV(sv)))
1631 return SvUV(tmpstr);
1632 return PTR2UV(SvRV(sv));
1634 if (SvREADONLY(sv) && !SvOK(sv)) {
1636 if (ckWARN(WARN_UNINITIALIZED))
1646 return (UV)SvIVX(sv);
1650 /* We can cache the IV/UV value even if it not good enough
1651 * to reconstruct NV, since the conversion to PV will prefer
1654 if (SvTYPE(sv) == SVt_NV)
1655 sv_upgrade(sv, SVt_PVNV);
1657 if (SvNVX(sv) >= -0.5) {
1659 SvUVX(sv) = U_V(SvNVX(sv));
1662 SvIVX(sv) = I_V(SvNVX(sv));
1664 DEBUG_c(PerlIO_printf(Perl_debug_log,
1665 "0x%"UVxf" 2uv(%"IVdf" => %"IVdf") (as signed)\n",
1668 (IV)(UV)SvIVX(sv)));
1669 return (UV)SvIVX(sv);
1672 else if (SvPOKp(sv) && SvLEN(sv)) {
1673 I32 numtype = looks_like_number(sv);
1675 /* We want to avoid a possible problem when we cache a UV which
1676 may be later translated to an NV, and the resulting NV is not
1677 the translation of the initial data.
1679 This means that if we cache such a UV, we need to cache the
1680 NV as well. Moreover, we trade speed for space, and do not
1681 cache the NV if not needed.
1683 if (numtype & IS_NUMBER_NOT_IV) {
1684 /* May be not an integer. Need to cache NV if we cache IV
1685 * - otherwise future conversion to NV will be wrong. */
1688 d = Atof(SvPVX(sv));
1690 if (SvTYPE(sv) < SVt_PVNV)
1691 sv_upgrade(sv, SVt_PVNV);
1695 #if defined(USE_LONG_DOUBLE)
1696 DEBUG_c(PerlIO_printf(Perl_debug_log,
1697 "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1698 PTR2UV(sv), SvNVX(sv)));
1700 DEBUG_c(PerlIO_printf(Perl_debug_log,
1701 "0x%"UVxf" 2nv(%g)\n",
1702 PTR2UV(sv), SvNVX(sv)));
1704 if (SvNVX(sv) < -0.5) {
1705 SvIVX(sv) = I_V(SvNVX(sv));
1708 SvUVX(sv) = U_V(SvNVX(sv));
1712 else if (numtype & IS_NUMBER_NEG) {
1713 /* The NV may be reconstructed from IV - safe to cache IV,
1714 which may be calculated by atol(). */
1715 if (SvTYPE(sv) == SVt_PV)
1716 sv_upgrade(sv, SVt_PVIV);
1718 SvIVX(sv) = (IV)Atol(SvPVX(sv));
1720 else if (numtype) { /* Non-negative */
1721 /* The NV may be reconstructed from UV - safe to cache UV,
1722 which may be calculated by strtoul()/atol. */
1723 if (SvTYPE(sv) == SVt_PV)
1724 sv_upgrade(sv, SVt_PVIV);
1726 (void)SvIsUV_on(sv);
1728 SvUVX(sv) = Strtoul(SvPVX(sv), Null(char**), 10);
1729 #else /* no atou(), but we know the number fits into IV... */
1730 /* The only problem may be if it is negative... */
1731 SvUVX(sv) = (UV)Atol(SvPVX(sv));
1734 else { /* Not a number. Cache 0. */
1737 if (SvTYPE(sv) < SVt_PVIV)
1738 sv_upgrade(sv, SVt_PVIV);
1740 (void)SvIsUV_on(sv);
1741 SvUVX(sv) = 0; /* We assume that 0s have the
1742 same bitmap in IV and UV. */
1743 if (ckWARN(WARN_NUMERIC))
1748 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1750 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1753 if (SvTYPE(sv) < SVt_IV)
1754 /* Typically the caller expects that sv_any is not NULL now. */
1755 sv_upgrade(sv, SVt_IV);
1759 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2uv(%"UVuf")\n",
1760 PTR2UV(sv),SvUVX(sv)));
1761 return SvIsUV(sv) ? SvUVX(sv) : (UV)SvIVX(sv);
1765 Perl_sv_2nv(pTHX_ register SV *sv)
1769 if (SvGMAGICAL(sv)) {
1773 if (SvPOKp(sv) && SvLEN(sv)) {
1775 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1777 return Atof(SvPVX(sv));
1781 return (NV)SvUVX(sv);
1783 return (NV)SvIVX(sv);
1786 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
1788 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
1794 if (SvTHINKFIRST(sv)) {
1797 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,numer)) &&
1798 (SvRV(tmpstr) != SvRV(sv)))
1799 return SvNV(tmpstr);
1800 return PTR2NV(SvRV(sv));
1802 if (SvREADONLY(sv) && !SvOK(sv)) {
1804 if (ckWARN(WARN_UNINITIALIZED))
1809 if (SvTYPE(sv) < SVt_NV) {
1810 if (SvTYPE(sv) == SVt_IV)
1811 sv_upgrade(sv, SVt_PVNV);
1813 sv_upgrade(sv, SVt_NV);
1814 #if defined(USE_LONG_DOUBLE)
1816 STORE_NUMERIC_LOCAL_SET_STANDARD();
1817 PerlIO_printf(Perl_debug_log,
1818 "0x%"UVxf" num(%" PERL_PRIgldbl ")\n",
1819 PTR2UV(sv), SvNVX(sv));
1820 RESTORE_NUMERIC_LOCAL();
1824 STORE_NUMERIC_LOCAL_SET_STANDARD();
1825 PerlIO_printf(Perl_debug_log, "0x%"UVxf" num(%g)\n",
1826 PTR2UV(sv), SvNVX(sv));
1827 RESTORE_NUMERIC_LOCAL();
1831 else if (SvTYPE(sv) < SVt_PVNV)
1832 sv_upgrade(sv, SVt_PVNV);
1834 (!SvPOKp(sv) || !strchr(SvPVX(sv),'.') || !looks_like_number(sv)))
1836 SvNVX(sv) = SvIsUV(sv) ? (NV)SvUVX(sv) : (NV)SvIVX(sv);
1838 else if (SvPOKp(sv) && SvLEN(sv)) {
1840 if (ckWARN(WARN_NUMERIC) && !SvIOKp(sv) && !looks_like_number(sv))
1842 SvNVX(sv) = Atof(SvPVX(sv));
1846 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
1848 if (SvTYPE(sv) < SVt_NV)
1849 /* Typically the caller expects that sv_any is not NULL now. */
1850 sv_upgrade(sv, SVt_NV);
1854 #if defined(USE_LONG_DOUBLE)
1856 STORE_NUMERIC_LOCAL_SET_STANDARD();
1857 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2nv(%" PERL_PRIgldbl ")\n",
1858 PTR2UV(sv), SvNVX(sv));
1859 RESTORE_NUMERIC_LOCAL();
1863 STORE_NUMERIC_LOCAL_SET_STANDARD();
1864 PerlIO_printf(Perl_debug_log, "0x%"UVxf" 1nv(%g)\n",
1865 PTR2UV(sv), SvNVX(sv));
1866 RESTORE_NUMERIC_LOCAL();
1873 S_asIV(pTHX_ SV *sv)
1875 I32 numtype = looks_like_number(sv);
1878 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1879 return Atol(SvPVX(sv));
1882 if (ckWARN(WARN_NUMERIC))
1885 d = Atof(SvPVX(sv));
1890 S_asUV(pTHX_ SV *sv)
1892 I32 numtype = looks_like_number(sv);
1895 if (numtype & IS_NUMBER_TO_INT_BY_ATOL)
1896 return Strtoul(SvPVX(sv), Null(char**), 10);
1900 if (ckWARN(WARN_NUMERIC))
1903 return U_V(Atof(SvPVX(sv)));
1907 * Returns a combination of (advisory only - can get false negatives)
1908 * IS_NUMBER_TO_INT_BY_ATOL, IS_NUMBER_TO_INT_BY_ATOF, IS_NUMBER_NOT_IV,
1910 * 0 if does not look like number.
1912 * In fact possible values are 0 and
1913 * IS_NUMBER_TO_INT_BY_ATOL 123
1914 * IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV 123.1
1915 * IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV 123e0
1916 * IS_NUMBER_INFINITY
1917 * with a possible addition of IS_NUMBER_NEG.
1921 =for apidoc looks_like_number
1923 Test if an the content of an SV looks like a number (or is a
1930 Perl_looks_like_number(pTHX_ SV *sv)
1933 register char *send;
1934 register char *sbegin;
1935 register char *nbegin;
1944 else if (SvPOKp(sv))
1945 sbegin = SvPV(sv, len);
1948 send = sbegin + len;
1955 numtype = IS_NUMBER_NEG;
1962 * we return IS_NUMBER_TO_INT_BY_ATOL if the number can be converted
1963 * to _integer_ with atol() and IS_NUMBER_TO_INT_BY_ATOF if you need
1967 /* next must be digit or the radix separator or beginning of infinity */
1971 } while (isDIGIT(*s));
1973 if (s - nbegin >= TYPE_DIGITS(IV)) /* Cannot cache ato[ul]() */
1974 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
1976 numtype |= IS_NUMBER_TO_INT_BY_ATOL;
1979 #ifdef USE_LOCALE_NUMERIC
1980 || IS_NUMERIC_RADIX(*s)
1984 numtype |= IS_NUMBER_NOT_IV;
1985 while (isDIGIT(*s)) /* optional digits after the radix */
1990 #ifdef USE_LOCALE_NUMERIC
1991 || IS_NUMERIC_RADIX(*s)
1995 numtype |= IS_NUMBER_TO_INT_BY_ATOL | IS_NUMBER_NOT_IV;
1996 /* no digits before the radix means we need digits after it */
2000 } while (isDIGIT(*s));
2005 else if (*s == 'I' || *s == 'i') {
2006 s++; if (*s != 'N' && *s != 'n') return 0;
2007 s++; if (*s != 'F' && *s != 'f') return 0;
2008 s++; if (*s == 'I' || *s == 'i') {
2009 s++; if (*s != 'N' && *s != 'n') return 0;
2010 s++; if (*s != 'I' && *s != 'i') return 0;
2011 s++; if (*s != 'T' && *s != 't') return 0;
2012 s++; if (*s != 'Y' && *s != 'y') return 0;
2020 numtype = IS_NUMBER_INFINITY;
2022 /* we can have an optional exponent part */
2023 if (*s == 'e' || *s == 'E') {
2024 numtype &= ~IS_NUMBER_NEG;
2025 numtype |= IS_NUMBER_TO_INT_BY_ATOF | IS_NUMBER_NOT_IV;
2027 if (*s == '+' || *s == '-')
2032 } while (isDIGIT(*s));
2042 if (len == 10 && memEQ(sbegin, "0 but true", 10))
2043 return IS_NUMBER_TO_INT_BY_ATOL;
2048 Perl_sv_2pv_nolen(pTHX_ register SV *sv)
2051 return sv_2pv(sv, &n_a);
2054 /* We assume that buf is at least TYPE_CHARS(UV) long. */
2056 uiv_2buf(char *buf, IV iv, UV uv, int is_uv, char **peob)
2058 char *ptr = buf + TYPE_CHARS(UV);
2072 *--ptr = '0' + (uv % 10);
2081 Perl_sv_2pv(pTHX_ register SV *sv, STRLEN *lp)
2086 char tbuf[64]; /* Must fit sprintf/Gconvert of longest IV/NV */
2087 char *tmpbuf = tbuf;
2093 if (SvGMAGICAL(sv)) {
2101 (void)sprintf(tmpbuf,"%"UVuf, (UV)SvUVX(sv));
2103 (void)sprintf(tmpbuf,"%"IVdf, (IV)SvIVX(sv));
2108 Gconvert(SvNVX(sv), NV_DIG, 0, tmpbuf);
2113 if (!(SvFLAGS(sv) & SVs_PADTMP)) {
2115 if (ckWARN(WARN_UNINITIALIZED) && !PL_localizing)
2122 if (SvTHINKFIRST(sv)) {
2125 if (SvAMAGIC(sv) && (tmpstr=AMG_CALLun(sv,string)) &&
2126 (SvRV(tmpstr) != SvRV(sv)))
2127 return SvPV(tmpstr,*lp);
2134 switch (SvTYPE(sv)) {
2136 if ( ((SvFLAGS(sv) &
2137 (SVs_OBJECT|SVf_OK|SVs_GMG|SVs_SMG|SVs_RMG))
2138 == (SVs_OBJECT|SVs_RMG))
2139 && strEQ(s=HvNAME(SvSTASH(sv)), "Regexp")
2140 && (mg = mg_find(sv, 'r'))) {
2142 regexp *re = (regexp *)mg->mg_obj;
2145 char *fptr = "msix";
2150 U16 reganch = (re->reganch & PMf_COMPILETIME) >> 12;
2152 while((ch = *fptr++)) {
2154 reflags[left++] = ch;
2157 reflags[right--] = ch;
2162 reflags[left] = '-';
2166 mg->mg_len = re->prelen + 4 + left;
2167 New(616, mg->mg_ptr, mg->mg_len + 1 + left, char);
2168 Copy("(?", mg->mg_ptr, 2, char);
2169 Copy(reflags, mg->mg_ptr+2, left, char);
2170 Copy(":", mg->mg_ptr+left+2, 1, char);
2171 Copy(re->precomp, mg->mg_ptr+3+left, re->prelen, char);
2172 mg->mg_ptr[mg->mg_len - 1] = ')';
2173 mg->mg_ptr[mg->mg_len] = 0;
2175 PL_reginterp_cnt += re->program[0].next_off;
2187 case SVt_PVBM: if (SvROK(sv))
2190 s = "SCALAR"; break;
2191 case SVt_PVLV: s = "LVALUE"; break;
2192 case SVt_PVAV: s = "ARRAY"; break;
2193 case SVt_PVHV: s = "HASH"; break;
2194 case SVt_PVCV: s = "CODE"; break;
2195 case SVt_PVGV: s = "GLOB"; break;
2196 case SVt_PVFM: s = "FORMAT"; break;
2197 case SVt_PVIO: s = "IO"; break;
2198 default: s = "UNKNOWN"; break;
2202 Perl_sv_setpvf(aTHX_ tsv, "%s=%s", HvNAME(SvSTASH(sv)), s);
2205 Perl_sv_catpvf(aTHX_ tsv, "(0x%"UVxf")", PTR2UV(sv));
2211 if (SvREADONLY(sv) && !SvOK(sv)) {
2213 if (ckWARN(WARN_UNINITIALIZED))
2219 if (SvNOKp(sv)) { /* See note in sv_2uv() */
2220 /* XXXX 64-bit? IV may have better precision... */
2221 /* I tried changing this to be 64-bit-aware and
2222 * the t/op/numconvert.t became very, very, angry.
2224 if (SvTYPE(sv) < SVt_PVNV)
2225 sv_upgrade(sv, SVt_PVNV);
2226 /* The +20 is pure guesswork. Configure test needed. --jhi */
2227 SvGROW(sv, NV_DIG + 20);
2229 olderrno = errno; /* some Xenix systems wipe out errno here */
2231 if (SvNVX(sv) == 0.0)
2232 (void)strcpy(s,"0");
2236 Gconvert(SvNVX(sv), NV_DIG, 0, s);
2239 #ifdef FIXNEGATIVEZERO
2240 if (*s == '-' && s[1] == '0' && !s[2])
2249 else if (SvIOKp(sv)) {
2250 U32 isIOK = SvIOK(sv);
2251 U32 isUIOK = SvIsUV(sv);
2252 char buf[TYPE_CHARS(UV)];
2255 if (SvTYPE(sv) < SVt_PVIV)
2256 sv_upgrade(sv, SVt_PVIV);
2258 ptr = uiv_2buf(buf, 0, SvUVX(sv), 1, &ebuf);
2260 ptr = uiv_2buf(buf, SvIVX(sv), 0, 0, &ebuf);
2261 SvGROW(sv, ebuf - ptr + 1); /* inlined from sv_setpvn */
2262 Move(ptr,SvPVX(sv),ebuf - ptr,char);
2263 SvCUR_set(sv, ebuf - ptr);
2276 if (ckWARN(WARN_UNINITIALIZED)
2277 && !PL_localizing && !(SvFLAGS(sv) & SVs_PADTMP))
2282 if (SvTYPE(sv) < SVt_PV)
2283 /* Typically the caller expects that sv_any is not NULL now. */
2284 sv_upgrade(sv, SVt_PV);
2287 *lp = s - SvPVX(sv);
2290 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
2291 PTR2UV(sv),SvPVX(sv)));
2295 if (SvROK(sv)) { /* XXX Skip this when sv_pvn_force calls */
2296 /* Sneaky stuff here */
2300 tsv = newSVpv(tmpbuf, 0);
2316 len = strlen(tmpbuf);
2318 #ifdef FIXNEGATIVEZERO
2319 if (len == 2 && t[0] == '-' && t[1] == '0') {
2324 (void)SvUPGRADE(sv, SVt_PV);
2326 s = SvGROW(sv, len + 1);
2335 Perl_sv_2pvbyte_nolen(pTHX_ register SV *sv)
2338 return sv_2pvbyte(sv, &n_a);
2342 Perl_sv_2pvbyte(pTHX_ register SV *sv, STRLEN *lp)
2344 return sv_2pv(sv,lp);
2348 Perl_sv_2pvutf8_nolen(pTHX_ register SV *sv)
2351 return sv_2pvutf8(sv, &n_a);
2355 Perl_sv_2pvutf8(pTHX_ register SV *sv, STRLEN *lp)
2357 sv_utf8_upgrade(sv);
2358 return sv_2pv(sv,lp);
2361 /* This function is only called on magical items */
2363 Perl_sv_2bool(pTHX_ register SV *sv)
2373 if (SvAMAGIC(sv) && (tmpsv=AMG_CALLun(sv,bool_)) &&
2374 (SvRV(tmpsv) != SvRV(sv)))
2375 return SvTRUE(tmpsv);
2376 return SvRV(sv) != 0;
2379 register XPV* Xpvtmp;
2380 if ((Xpvtmp = (XPV*)SvANY(sv)) &&
2381 (*Xpvtmp->xpv_pv > '0' ||
2382 Xpvtmp->xpv_cur > 1 ||
2383 (Xpvtmp->xpv_cur && *Xpvtmp->xpv_pv != '0')))
2390 return SvIVX(sv) != 0;
2393 return SvNVX(sv) != 0.0;
2401 =for apidoc sv_utf8_upgrade
2403 Convert the PV of an SV to its UTF8-encoded form.
2409 Perl_sv_utf8_upgrade(pTHX_ register SV *sv)
2414 if (!sv || !SvPOK(sv) || SvUTF8(sv))
2417 /* This function could be much more efficient if we had a FLAG in SVs
2418 * to signal if there are any hibit chars in the PV.
2420 for (s = t = SvPVX(sv), hibit = FALSE; t < SvEND(sv) && !hibit; t++)
2425 STRLEN len = SvCUR(sv) + 1; /* Plus the \0 */
2426 SvPVX(sv) = (char*)bytes_to_utf8((U8*)s, &len);
2427 SvCUR(sv) = len - 1;
2428 SvLEN(sv) = len; /* No longer know the real size. */
2430 Safefree(s); /* No longer using what was there before. */
2435 =for apidoc sv_utf8_downgrade
2437 Attempt to convert the PV of an SV from UTF8-encoded to byte encoding.
2438 This may not be possible if the PV contains non-byte encoding characters;
2439 if this is the case, either returns false or, if C<fail_ok> is not
2446 Perl_sv_utf8_downgrade(pTHX_ register SV* sv, bool fail_ok)
2448 if (SvPOK(sv) && SvUTF8(sv)) {
2449 char *c = SvPVX(sv);
2450 STRLEN len = SvCUR(sv) + 1; /* include trailing NUL */
2451 if (!utf8_to_bytes((U8*)c, &len)) {
2456 Perl_croak(aTHX_ "Wide character in %s",
2457 PL_op_desc[PL_op->op_type]);
2459 Perl_croak(aTHX_ "Wide character");
2462 SvCUR(sv) = len - 1;
2469 =for apidoc sv_utf8_encode
2471 Convert the PV of an SV to UTF8-encoded, but then turn off the C<SvUTF8>
2472 flag so that it looks like bytes again. Nothing calls this.
2478 Perl_sv_utf8_encode(pTHX_ register SV *sv)
2480 sv_utf8_upgrade(sv);
2485 Perl_sv_utf8_decode(pTHX_ register SV *sv)
2489 bool has_utf = FALSE;
2490 if (!sv_utf8_downgrade(sv, TRUE))
2493 /* it is actually just a matter of turning the utf8 flag on, but
2494 * we want to make sure everything inside is valid utf8 first.
2497 if (!is_utf8_string((U8*)c, SvCUR(sv)+1))
2500 while (c < SvEND(sv)) {
2511 /* Note: sv_setsv() should not be called with a source string that needs
2512 * to be reused, since it may destroy the source string if it is marked
2517 =for apidoc sv_setsv
2519 Copies the contents of the source SV C<ssv> into the destination SV C<dsv>.
2520 The source SV may be destroyed if it is mortal. Does not handle 'set'
2521 magic. See the macro forms C<SvSetSV>, C<SvSetSV_nosteal> and
2528 Perl_sv_setsv(pTHX_ SV *dstr, register SV *sstr)
2531 register U32 sflags;
2537 SV_CHECK_THINKFIRST(dstr);
2539 sstr = &PL_sv_undef;
2540 stype = SvTYPE(sstr);
2541 dtype = SvTYPE(dstr);
2545 /* There's a lot of redundancy below but we're going for speed here */
2550 if (dtype != SVt_PVGV) {
2551 (void)SvOK_off(dstr);
2559 sv_upgrade(dstr, SVt_IV);
2562 sv_upgrade(dstr, SVt_PVNV);
2566 sv_upgrade(dstr, SVt_PVIV);
2569 (void)SvIOK_only(dstr);
2570 SvIVX(dstr) = SvIVX(sstr);
2573 if (SvTAINTED(sstr))
2584 sv_upgrade(dstr, SVt_NV);
2589 sv_upgrade(dstr, SVt_PVNV);
2592 SvNVX(dstr) = SvNVX(sstr);
2593 (void)SvNOK_only(dstr);
2594 if (SvTAINTED(sstr))
2602 sv_upgrade(dstr, SVt_RV);
2603 else if (dtype == SVt_PVGV &&
2604 SvTYPE(SvRV(sstr)) == SVt_PVGV) {
2607 if (GvIMPORTED(dstr) != GVf_IMPORTED
2608 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2610 GvIMPORTED_on(dstr);
2621 sv_upgrade(dstr, SVt_PV);
2624 if (dtype < SVt_PVIV)
2625 sv_upgrade(dstr, SVt_PVIV);
2628 if (dtype < SVt_PVNV)
2629 sv_upgrade(dstr, SVt_PVNV);
2636 Perl_croak(aTHX_ "Bizarre copy of %s in %s", sv_reftype(sstr, 0),
2637 PL_op_name[PL_op->op_type]);
2639 Perl_croak(aTHX_ "Bizarre copy of %s", sv_reftype(sstr, 0));
2643 if (dtype <= SVt_PVGV) {
2645 if (dtype != SVt_PVGV) {
2646 char *name = GvNAME(sstr);
2647 STRLEN len = GvNAMELEN(sstr);
2648 sv_upgrade(dstr, SVt_PVGV);
2649 sv_magic(dstr, dstr, '*', Nullch, 0);
2650 GvSTASH(dstr) = (HV*)SvREFCNT_inc(GvSTASH(sstr));
2651 GvNAME(dstr) = savepvn(name, len);
2652 GvNAMELEN(dstr) = len;
2653 SvFAKE_on(dstr); /* can coerce to non-glob */
2655 /* ahem, death to those who redefine active sort subs */
2656 else if (PL_curstackinfo->si_type == PERLSI_SORT
2657 && GvCV(dstr) && PL_sortcop == CvSTART(GvCV(dstr)))
2658 Perl_croak(aTHX_ "Can't redefine active sort subroutine %s",
2660 (void)SvOK_off(dstr);
2661 GvINTRO_off(dstr); /* one-shot flag */
2663 GvGP(dstr) = gp_ref(GvGP(sstr));
2664 if (SvTAINTED(sstr))
2666 if (GvIMPORTED(dstr) != GVf_IMPORTED
2667 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2669 GvIMPORTED_on(dstr);
2677 if (SvGMAGICAL(sstr)) {
2679 if (SvTYPE(sstr) != stype) {
2680 stype = SvTYPE(sstr);
2681 if (stype == SVt_PVGV && dtype <= SVt_PVGV)
2685 if (stype == SVt_PVLV)
2686 (void)SvUPGRADE(dstr, SVt_PVNV);
2688 (void)SvUPGRADE(dstr, stype);
2691 sflags = SvFLAGS(sstr);
2693 if (sflags & SVf_ROK) {
2694 if (dtype >= SVt_PV) {
2695 if (dtype == SVt_PVGV) {
2696 SV *sref = SvREFCNT_inc(SvRV(sstr));
2698 int intro = GvINTRO(dstr);
2703 GvINTRO_off(dstr); /* one-shot flag */
2704 Newz(602,gp, 1, GP);
2705 GvGP(dstr) = gp_ref(gp);
2706 GvSV(dstr) = NEWSV(72,0);
2707 GvLINE(dstr) = CopLINE(PL_curcop);
2708 GvEGV(dstr) = (GV*)dstr;
2711 switch (SvTYPE(sref)) {
2714 SAVESPTR(GvAV(dstr));
2716 dref = (SV*)GvAV(dstr);
2717 GvAV(dstr) = (AV*)sref;
2718 if (!GvIMPORTED_AV(dstr)
2719 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2721 GvIMPORTED_AV_on(dstr);
2726 SAVESPTR(GvHV(dstr));
2728 dref = (SV*)GvHV(dstr);
2729 GvHV(dstr) = (HV*)sref;
2730 if (!GvIMPORTED_HV(dstr)
2731 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2733 GvIMPORTED_HV_on(dstr);
2738 if (GvCVGEN(dstr) && GvCV(dstr) != (CV*)sref) {
2739 SvREFCNT_dec(GvCV(dstr));
2740 GvCV(dstr) = Nullcv;
2741 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2742 PL_sub_generation++;
2744 SAVESPTR(GvCV(dstr));
2747 dref = (SV*)GvCV(dstr);
2748 if (GvCV(dstr) != (CV*)sref) {
2749 CV* cv = GvCV(dstr);
2751 if (!GvCVGEN((GV*)dstr) &&
2752 (CvROOT(cv) || CvXSUB(cv)))
2755 /* ahem, death to those who redefine
2756 * active sort subs */
2757 if (PL_curstackinfo->si_type == PERLSI_SORT &&
2758 PL_sortcop == CvSTART(cv))
2760 "Can't redefine active sort subroutine %s",
2761 GvENAME((GV*)dstr));
2762 /* Redefining a sub - warning is mandatory if
2763 it was a const and its value changed. */
2764 if (ckWARN(WARN_REDEFINE)
2766 && (!CvCONST((CV*)sref)
2767 || sv_cmp(cv_const_sv(cv),
2768 cv_const_sv((CV*)sref)))))
2770 Perl_warner(aTHX_ WARN_REDEFINE,
2772 ? "Constant subroutine %s redefined"
2773 : "Subroutine %s redefined",
2774 GvENAME((GV*)dstr));
2777 cv_ckproto(cv, (GV*)dstr,
2778 SvPOK(sref) ? SvPVX(sref) : Nullch);
2780 GvCV(dstr) = (CV*)sref;
2781 GvCVGEN(dstr) = 0; /* Switch off cacheness. */
2782 GvASSUMECV_on(dstr);
2783 PL_sub_generation++;
2785 if (!GvIMPORTED_CV(dstr)
2786 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2788 GvIMPORTED_CV_on(dstr);
2793 SAVESPTR(GvIOp(dstr));
2795 dref = (SV*)GvIOp(dstr);
2796 GvIOp(dstr) = (IO*)sref;
2800 SAVESPTR(GvFORM(dstr));
2802 dref = (SV*)GvFORM(dstr);
2803 GvFORM(dstr) = (CV*)sref;
2807 SAVESPTR(GvSV(dstr));
2809 dref = (SV*)GvSV(dstr);
2811 if (!GvIMPORTED_SV(dstr)
2812 && CopSTASH_ne(PL_curcop, GvSTASH(dstr)))
2814 GvIMPORTED_SV_on(dstr);
2822 if (SvTAINTED(sstr))
2827 (void)SvOOK_off(dstr); /* backoff */
2829 Safefree(SvPVX(dstr));
2830 SvLEN(dstr)=SvCUR(dstr)=0;
2833 (void)SvOK_off(dstr);
2834 SvRV(dstr) = SvREFCNT_inc(SvRV(sstr));
2836 if (sflags & SVp_NOK) {
2838 SvNVX(dstr) = SvNVX(sstr);
2840 if (sflags & SVp_IOK) {
2841 (void)SvIOK_on(dstr);
2842 SvIVX(dstr) = SvIVX(sstr);
2843 if (sflags & SVf_IVisUV)
2846 if (SvAMAGIC(sstr)) {
2850 else if (sflags & SVp_POK) {
2853 * Check to see if we can just swipe the string. If so, it's a
2854 * possible small lose on short strings, but a big win on long ones.
2855 * It might even be a win on short strings if SvPVX(dstr)
2856 * has to be allocated and SvPVX(sstr) has to be freed.
2859 if (SvTEMP(sstr) && /* slated for free anyway? */
2860 SvREFCNT(sstr) == 1 && /* and no other references to it? */
2861 !(sflags & SVf_OOK) && /* and not involved in OOK hack? */
2862 SvLEN(sstr)) /* and really is a string */
2864 if (SvPVX(dstr)) { /* we know that dtype >= SVt_PV */
2866 SvFLAGS(dstr) &= ~SVf_OOK;
2867 Safefree(SvPVX(dstr) - SvIVX(dstr));
2869 else if (SvLEN(dstr))
2870 Safefree(SvPVX(dstr));
2872 (void)SvPOK_only(dstr);
2873 SvPV_set(dstr, SvPVX(sstr));
2874 SvLEN_set(dstr, SvLEN(sstr));
2875 SvCUR_set(dstr, SvCUR(sstr));
2878 (void)SvOK_off(sstr); /* NOTE: nukes most SvFLAGS on sstr */
2879 SvPV_set(sstr, Nullch);
2884 else { /* have to copy actual string */
2885 STRLEN len = SvCUR(sstr);
2887 SvGROW(dstr, len + 1); /* inlined from sv_setpvn */
2888 Move(SvPVX(sstr),SvPVX(dstr),len,char);
2889 SvCUR_set(dstr, len);
2890 *SvEND(dstr) = '\0';
2891 (void)SvPOK_only(dstr);
2893 if ((sflags & SVf_UTF8) && !IN_BYTE)
2896 if (sflags & SVp_NOK) {
2898 SvNVX(dstr) = SvNVX(sstr);
2900 if (sflags & SVp_IOK) {
2901 (void)SvIOK_on(dstr);
2902 SvIVX(dstr) = SvIVX(sstr);
2903 if (sflags & SVf_IVisUV)
2907 else if (sflags & SVp_NOK) {
2908 SvNVX(dstr) = SvNVX(sstr);
2909 (void)SvNOK_only(dstr);
2910 if (sflags & SVf_IOK) {
2911 (void)SvIOK_on(dstr);
2912 SvIVX(dstr) = SvIVX(sstr);
2913 /* XXXX Do we want to set IsUV for IV(ROK)? Be extra safe... */
2914 if (sflags & SVf_IVisUV)
2918 else if (sflags & SVp_IOK) {
2919 (void)SvIOK_only(dstr);
2920 SvIVX(dstr) = SvIVX(sstr);
2921 if (sflags & SVf_IVisUV)
2925 if (dtype == SVt_PVGV) {
2926 if (ckWARN(WARN_MISC))
2927 Perl_warner(aTHX_ WARN_MISC, "Undefined value assigned to typeglob");
2930 (void)SvOK_off(dstr);
2932 if (SvTAINTED(sstr))
2937 =for apidoc sv_setsv_mg
2939 Like C<sv_setsv>, but also handles 'set' magic.
2945 Perl_sv_setsv_mg(pTHX_ SV *dstr, register SV *sstr)
2947 sv_setsv(dstr,sstr);
2952 =for apidoc sv_setpvn
2954 Copies a string into an SV. The C<len> parameter indicates the number of
2955 bytes to be copied. Does not handle 'set' magic. See C<sv_setpvn_mg>.
2961 Perl_sv_setpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2963 register char *dptr;
2964 assert(len >= 0); /* STRLEN is probably unsigned, so this may
2965 elicit a warning, but it won't hurt. */
2966 SV_CHECK_THINKFIRST(sv);
2971 (void)SvUPGRADE(sv, SVt_PV);
2973 SvGROW(sv, len + 1);
2975 Move(ptr,dptr,len,char);
2978 (void)SvPOK_only(sv); /* validate pointer */
2983 =for apidoc sv_setpvn_mg
2985 Like C<sv_setpvn>, but also handles 'set' magic.
2991 Perl_sv_setpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
2993 sv_setpvn(sv,ptr,len);
2998 =for apidoc sv_setpv
3000 Copies a string into an SV. The string must be null-terminated. Does not
3001 handle 'set' magic. See C<sv_setpv_mg>.
3007 Perl_sv_setpv(pTHX_ register SV *sv, register const char *ptr)
3009 register STRLEN len;
3011 SV_CHECK_THINKFIRST(sv);
3017 (void)SvUPGRADE(sv, SVt_PV);
3019 SvGROW(sv, len + 1);
3020 Move(ptr,SvPVX(sv),len+1,char);
3022 (void)SvPOK_only(sv); /* validate pointer */
3027 =for apidoc sv_setpv_mg
3029 Like C<sv_setpv>, but also handles 'set' magic.
3035 Perl_sv_setpv_mg(pTHX_ register SV *sv, register const char *ptr)
3042 =for apidoc sv_usepvn
3044 Tells an SV to use C<ptr> to find its string value. Normally the string is
3045 stored inside the SV but sv_usepvn allows the SV to use an outside string.
3046 The C<ptr> should point to memory that was allocated by C<malloc>. The
3047 string length, C<len>, must be supplied. This function will realloc the
3048 memory pointed to by C<ptr>, so that pointer should not be freed or used by
3049 the programmer after giving it to sv_usepvn. Does not handle 'set' magic.
3050 See C<sv_usepvn_mg>.
3056 Perl_sv_usepvn(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3058 SV_CHECK_THINKFIRST(sv);
3059 (void)SvUPGRADE(sv, SVt_PV);
3064 (void)SvOOK_off(sv);
3065 if (SvPVX(sv) && SvLEN(sv))
3066 Safefree(SvPVX(sv));
3067 Renew(ptr, len+1, char);
3070 SvLEN_set(sv, len+1);
3072 (void)SvPOK_only(sv); /* validate pointer */
3077 =for apidoc sv_usepvn_mg
3079 Like C<sv_usepvn>, but also handles 'set' magic.
3085 Perl_sv_usepvn_mg(pTHX_ register SV *sv, register char *ptr, register STRLEN len)
3087 sv_usepvn(sv,ptr,len);
3092 Perl_sv_force_normal(pTHX_ register SV *sv)
3094 if (SvREADONLY(sv)) {
3097 char *pvx = SvPVX(sv);
3098 STRLEN len = SvCUR(sv);
3099 U32 hash = SvUVX(sv);
3100 SvGROW(sv, len + 1);
3101 Move(pvx,SvPVX(sv),len,char);
3105 unsharepvn(pvx,len,hash);
3107 else if (PL_curcop != &PL_compiling)
3108 Perl_croak(aTHX_ PL_no_modify);
3112 else if (SvFAKE(sv) && SvTYPE(sv) == SVt_PVGV)
3119 Efficient removal of characters from the beginning of the string buffer.
3120 SvPOK(sv) must be true and the C<ptr> must be a pointer to somewhere inside
3121 the string buffer. The C<ptr> becomes the first character of the adjusted
3128 Perl_sv_chop(pTHX_ register SV *sv, register char *ptr) /* like set but assuming ptr is in sv */
3132 register STRLEN delta;
3134 if (!ptr || !SvPOKp(sv))
3136 SV_CHECK_THINKFIRST(sv);
3137 if (SvTYPE(sv) < SVt_PVIV)
3138 sv_upgrade(sv,SVt_PVIV);
3141 if (!SvLEN(sv)) { /* make copy of shared string */
3142 char *pvx = SvPVX(sv);
3143 STRLEN len = SvCUR(sv);
3144 SvGROW(sv, len + 1);
3145 Move(pvx,SvPVX(sv),len,char);
3149 SvFLAGS(sv) |= SVf_OOK;
3151 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVp_IOK|SVp_NOK|SVf_IVisUV);
3152 delta = ptr - SvPVX(sv);
3160 =for apidoc sv_catpvn
3162 Concatenates the string onto the end of the string which is in the SV. The
3163 C<len> indicates number of bytes to copy. Handles 'get' magic, but not
3164 'set' magic. See C<sv_catpvn_mg>.
3170 Perl_sv_catpvn(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3175 junk = SvPV_force(sv, tlen);
3176 SvGROW(sv, tlen + len + 1);
3179 Move(ptr,SvPVX(sv)+tlen,len,char);
3182 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3187 =for apidoc sv_catpvn_mg
3189 Like C<sv_catpvn>, but also handles 'set' magic.
3195 Perl_sv_catpvn_mg(pTHX_ register SV *sv, register const char *ptr, register STRLEN len)
3197 sv_catpvn(sv,ptr,len);
3202 =for apidoc sv_catsv
3204 Concatenates the string from SV C<ssv> onto the end of the string in SV
3205 C<dsv>. Handles 'get' magic, but not 'set' magic. See C<sv_catsv_mg>.
3211 Perl_sv_catsv(pTHX_ SV *dstr, register SV *sstr)
3217 if ((s = SvPV(sstr, len))) {
3218 if (DO_UTF8(sstr)) {
3219 sv_utf8_upgrade(dstr);
3220 sv_catpvn(dstr,s,len);
3224 sv_catpvn(dstr,s,len);
3229 =for apidoc sv_catsv_mg
3231 Like C<sv_catsv>, but also handles 'set' magic.
3237 Perl_sv_catsv_mg(pTHX_ SV *dstr, register SV *sstr)
3239 sv_catsv(dstr,sstr);
3244 =for apidoc sv_catpv
3246 Concatenates the string onto the end of the string which is in the SV.
3247 Handles 'get' magic, but not 'set' magic. See C<sv_catpv_mg>.
3253 Perl_sv_catpv(pTHX_ register SV *sv, register const char *ptr)
3255 register STRLEN len;
3261 junk = SvPV_force(sv, tlen);
3263 SvGROW(sv, tlen + len + 1);
3266 Move(ptr,SvPVX(sv)+tlen,len+1,char);
3268 (void)SvPOK_only_UTF8(sv); /* validate pointer */
3273 =for apidoc sv_catpv_mg
3275 Like C<sv_catpv>, but also handles 'set' magic.
3281 Perl_sv_catpv_mg(pTHX_ register SV *sv, register const char *ptr)
3288 Perl_newSV(pTHX_ STRLEN len)
3294 sv_upgrade(sv, SVt_PV);
3295 SvGROW(sv, len + 1);
3300 /* name is assumed to contain an SV* if (name && namelen == HEf_SVKEY) */
3303 =for apidoc sv_magic
3305 Adds magic to an SV.
3311 Perl_sv_magic(pTHX_ register SV *sv, SV *obj, int how, const char *name, I32 namlen)
3315 if (SvREADONLY(sv)) {
3317 if (PL_curcop != &PL_compiling && !strchr("gBf", how))
3318 Perl_croak(aTHX_ PL_no_modify);
3320 if (SvMAGICAL(sv) || (how == 't' && SvTYPE(sv) >= SVt_PVMG)) {
3321 if (SvMAGIC(sv) && (mg = mg_find(sv, how))) {
3328 (void)SvUPGRADE(sv, SVt_PVMG);
3330 Newz(702,mg, 1, MAGIC);
3331 mg->mg_moremagic = SvMAGIC(sv);
3334 if (!obj || obj == sv || how == '#' || how == 'r')
3338 mg->mg_obj = SvREFCNT_inc(obj);
3339 mg->mg_flags |= MGf_REFCOUNTED;
3342 mg->mg_len = namlen;
3345 mg->mg_ptr = savepvn(name, namlen);
3346 else if (namlen == HEf_SVKEY)
3347 mg->mg_ptr = (char*)SvREFCNT_inc((SV*)name);
3351 mg->mg_virtual = &PL_vtbl_sv;
3354 mg->mg_virtual = &PL_vtbl_amagic;
3357 mg->mg_virtual = &PL_vtbl_amagicelem;
3363 mg->mg_virtual = &PL_vtbl_bm;
3366 mg->mg_virtual = &PL_vtbl_regdata;
3369 mg->mg_virtual = &PL_vtbl_regdatum;
3372 mg->mg_virtual = &PL_vtbl_env;
3375 mg->mg_virtual = &PL_vtbl_fm;
3378 mg->mg_virtual = &PL_vtbl_envelem;
3381 mg->mg_virtual = &PL_vtbl_mglob;
3384 mg->mg_virtual = &PL_vtbl_isa;
3387 mg->mg_virtual = &PL_vtbl_isaelem;
3390 mg->mg_virtual = &PL_vtbl_nkeys;
3397 mg->mg_virtual = &PL_vtbl_dbline;
3401 mg->mg_virtual = &PL_vtbl_mutex;
3403 #endif /* USE_THREADS */
3404 #ifdef USE_LOCALE_COLLATE
3406 mg->mg_virtual = &PL_vtbl_collxfrm;
3408 #endif /* USE_LOCALE_COLLATE */
3410 mg->mg_virtual = &PL_vtbl_pack;
3414 mg->mg_virtual = &PL_vtbl_packelem;
3417 mg->mg_virtual = &PL_vtbl_regexp;
3420 mg->mg_virtual = &PL_vtbl_sig;
3423 mg->mg_virtual = &PL_vtbl_sigelem;
3426 mg->mg_virtual = &PL_vtbl_taint;
3430 mg->mg_virtual = &PL_vtbl_uvar;
3433 mg->mg_virtual = &PL_vtbl_vec;
3436 mg->mg_virtual = &PL_vtbl_substr;
3439 mg->mg_virtual = &PL_vtbl_defelem;
3442 mg->mg_virtual = &PL_vtbl_glob;
3445 mg->mg_virtual = &PL_vtbl_arylen;
3448 mg->mg_virtual = &PL_vtbl_pos;
3451 mg->mg_virtual = &PL_vtbl_backref;
3453 case '~': /* Reserved for use by extensions not perl internals. */
3454 /* Useful for attaching extension internal data to perl vars. */
3455 /* Note that multiple extensions may clash if magical scalars */
3456 /* etc holding private data from one are passed to another. */
3460 Perl_croak(aTHX_ "Don't know how to handle magic of type '%c'", how);
3464 SvFLAGS(sv) &= ~(SVf_IOK|SVf_NOK|SVf_POK);
3468 =for apidoc sv_unmagic
3470 Removes magic from an SV.
3476 Perl_sv_unmagic(pTHX_ SV *sv, int type)
3480 if (SvTYPE(sv) < SVt_PVMG || !SvMAGIC(sv))
3483 for (mg = *mgp; mg; mg = *mgp) {
3484 if (mg->mg_type == type) {
3485 MGVTBL* vtbl = mg->mg_virtual;
3486 *mgp = mg->mg_moremagic;
3487 if (vtbl && vtbl->svt_free)
3488 CALL_FPTR(vtbl->svt_free)(aTHX_ sv, mg);
3489 if (mg->mg_ptr && mg->mg_type != 'g')
3490 if (mg->mg_len >= 0)
3491 Safefree(mg->mg_ptr);
3492 else if (mg->mg_len == HEf_SVKEY)
3493 SvREFCNT_dec((SV*)mg->mg_ptr);
3494 if (mg->mg_flags & MGf_REFCOUNTED)
3495 SvREFCNT_dec(mg->mg_obj);
3499 mgp = &mg->mg_moremagic;
3503 SvFLAGS(sv) |= (SvFLAGS(sv) & (SVp_IOK|SVp_NOK|SVp_POK)) >> PRIVSHIFT;
3510 =for apidoc sv_rvweaken
3518 Perl_sv_rvweaken(pTHX_ SV *sv)
3521 if (!SvOK(sv)) /* let undefs pass */
3524 Perl_croak(aTHX_ "Can't weaken a nonreference");
3525 else if (SvWEAKREF(sv)) {
3527 if (ckWARN(WARN_MISC))
3528 Perl_warner(aTHX_ WARN_MISC, "Reference is already weak");
3532 sv_add_backref(tsv, sv);
3539 S_sv_add_backref(pTHX_ SV *tsv, SV *sv)
3543 if (SvMAGICAL(tsv) && (mg = mg_find(tsv, '<')))
3544 av = (AV*)mg->mg_obj;
3547 sv_magic(tsv, (SV*)av, '<', NULL, 0);
3548 SvREFCNT_dec(av); /* for sv_magic */
3554 S_sv_del_backref(pTHX_ SV *sv)
3561 if (!SvMAGICAL(tsv) || !(mg = mg_find(tsv, '<')))
3562 Perl_croak(aTHX_ "panic: del_backref");
3563 av = (AV *)mg->mg_obj;
3568 svp[i] = &PL_sv_undef; /* XXX */
3575 =for apidoc sv_insert
3577 Inserts a string at the specified offset/length within the SV. Similar to
3578 the Perl substr() function.
3584 Perl_sv_insert(pTHX_ SV *bigstr, STRLEN offset, STRLEN len, char *little, STRLEN littlelen)
3588 register char *midend;
3589 register char *bigend;
3595 Perl_croak(aTHX_ "Can't modify non-existent substring");
3596 SvPV_force(bigstr, curlen);
3597 (void)SvPOK_only_UTF8(bigstr);
3598 if (offset + len > curlen) {
3599 SvGROW(bigstr, offset+len+1);
3600 Zero(SvPVX(bigstr)+curlen, offset+len-curlen, char);
3601 SvCUR_set(bigstr, offset+len);
3605 i = littlelen - len;
3606 if (i > 0) { /* string might grow */
3607 big = SvGROW(bigstr, SvCUR(bigstr) + i + 1);
3608 mid = big + offset + len;
3609 midend = bigend = big + SvCUR(bigstr);
3612 while (midend > mid) /* shove everything down */
3613 *--bigend = *--midend;
3614 Move(little,big+offset,littlelen,char);
3620 Move(little,SvPVX(bigstr)+offset,len,char);
3625 big = SvPVX(bigstr);
3628 bigend = big + SvCUR(bigstr);
3630 if (midend > bigend)
3631 Perl_croak(aTHX_ "panic: sv_insert");
3633 if (mid - big > bigend - midend) { /* faster to shorten from end */
3635 Move(little, mid, littlelen,char);
3638 i = bigend - midend;
3640 Move(midend, mid, i,char);
3644 SvCUR_set(bigstr, mid - big);
3647 else if ((i = mid - big)) { /* faster from front */
3648 midend -= littlelen;
3650 sv_chop(bigstr,midend-i);
3655 Move(little, mid, littlelen,char);
3657 else if (littlelen) {
3658 midend -= littlelen;
3659 sv_chop(bigstr,midend);
3660 Move(little,midend,littlelen,char);
3663 sv_chop(bigstr,midend);
3669 =for apidoc sv_replace
3671 Make the first argument a copy of the second, then delete the original.
3677 Perl_sv_replace(pTHX_ register SV *sv, register SV *nsv)
3680 U32 refcnt = SvREFCNT(sv);
3681 SV_CHECK_THINKFIRST(sv);
3682 if (SvREFCNT(nsv) != 1 && ckWARN_d(WARN_INTERNAL))
3683 Perl_warner(aTHX_ WARN_INTERNAL, "Reference miscount in sv_replace()");
3684 if (SvMAGICAL(sv)) {
3688 sv_upgrade(nsv, SVt_PVMG);
3689 SvMAGIC(nsv) = SvMAGIC(sv);
3690 SvFLAGS(nsv) |= SvMAGICAL(sv);
3696 assert(!SvREFCNT(sv));
3697 StructCopy(nsv,sv,SV);
3698 SvREFCNT(sv) = refcnt;
3699 SvFLAGS(nsv) |= SVTYPEMASK; /* Mark as freed */
3704 =for apidoc sv_clear
3706 Clear an SV, making it empty. Does not free the memory used by the SV
3713 Perl_sv_clear(pTHX_ register SV *sv)
3717 assert(SvREFCNT(sv) == 0);
3721 if (PL_defstash) { /* Still have a symbol table? */
3726 Zero(&tmpref, 1, SV);
3727 sv_upgrade(&tmpref, SVt_RV);
3729 SvREADONLY_on(&tmpref); /* DESTROY() could be naughty */
3730 SvREFCNT(&tmpref) = 1;
3733 stash = SvSTASH(sv);
3734 destructor = gv_fetchmethod(SvSTASH(sv), "DESTROY");
3737 PUSHSTACKi(PERLSI_DESTROY);
3738 SvRV(&tmpref) = SvREFCNT_inc(sv);
3743 call_sv((SV*)GvCV(destructor),
3744 G_DISCARD|G_EVAL|G_KEEPERR);
3750 } while (SvOBJECT(sv) && SvSTASH(sv) != stash);
3752 del_XRV(SvANY(&tmpref));
3755 if (PL_in_clean_objs)
3756 Perl_croak(aTHX_ "DESTROY created new reference to dead object '%s'",
3758 /* DESTROY gave object new lease on life */
3764 SvREFCNT_dec(SvSTASH(sv)); /* possibly of changed persuasion */
3765 SvOBJECT_off(sv); /* Curse the object. */
3766 if (SvTYPE(sv) != SVt_PVIO)
3767 --PL_sv_objcount; /* XXX Might want something more general */
3770 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv))
3773 switch (SvTYPE(sv)) {
3776 IoIFP(sv) != PerlIO_stdin() &&
3777 IoIFP(sv) != PerlIO_stdout() &&
3778 IoIFP(sv) != PerlIO_stderr())
3780 io_close((IO*)sv, FALSE);
3782 if (IoDIRP(sv) && !(IoFLAGS(sv) & IOf_FAKE_DIRP))
3783 PerlDir_close(IoDIRP(sv));
3784 IoDIRP(sv) = (DIR*)NULL;
3785 Safefree(IoTOP_NAME(sv));
3786 Safefree(IoFMT_NAME(sv));
3787 Safefree(IoBOTTOM_NAME(sv));
3802 SvREFCNT_dec(LvTARG(sv));
3806 Safefree(GvNAME(sv));
3807 /* cannot decrease stash refcount yet, as we might recursively delete
3808 ourselves when the refcnt drops to zero. Delay SvREFCNT_dec
3809 of stash until current sv is completely gone.
3810 -- JohnPC, 27 Mar 1998 */
3811 stash = GvSTASH(sv);
3817 (void)SvOOK_off(sv);
3825 SvREFCNT_dec(SvRV(sv));
3827 else if (SvPVX(sv) && SvLEN(sv))
3828 Safefree(SvPVX(sv));
3829 else if (SvPVX(sv) && SvREADONLY(sv) && SvFAKE(sv)) {
3830 unsharepvn(SvPVX(sv),SvCUR(sv),SvUVX(sv));
3842 switch (SvTYPE(sv)) {
3858 del_XPVIV(SvANY(sv));
3861 del_XPVNV(SvANY(sv));
3864 del_XPVMG(SvANY(sv));
3867 del_XPVLV(SvANY(sv));
3870 del_XPVAV(SvANY(sv));
3873 del_XPVHV(SvANY(sv));
3876 del_XPVCV(SvANY(sv));
3879 del_XPVGV(SvANY(sv));
3880 /* code duplication for increased performance. */
3881 SvFLAGS(sv) &= SVf_BREAK;
3882 SvFLAGS(sv) |= SVTYPEMASK;
3883 /* decrease refcount of the stash that owns this GV, if any */
3885 SvREFCNT_dec(stash);
3886 return; /* not break, SvFLAGS reset already happened */
3888 del_XPVBM(SvANY(sv));
3891 del_XPVFM(SvANY(sv));
3894 del_XPVIO(SvANY(sv));
3897 SvFLAGS(sv) &= SVf_BREAK;
3898 SvFLAGS(sv) |= SVTYPEMASK;
3902 Perl_sv_newref(pTHX_ SV *sv)
3905 ATOMIC_INC(SvREFCNT(sv));
3912 Free the memory used by an SV.
3918 Perl_sv_free(pTHX_ SV *sv)
3921 int refcount_is_zero;
3925 if (SvREFCNT(sv) == 0) {
3926 if (SvFLAGS(sv) & SVf_BREAK)
3928 if (PL_in_clean_all) /* All is fair */
3930 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3931 /* make sure SvREFCNT(sv)==0 happens very seldom */
3932 SvREFCNT(sv) = (~(U32)0)/2;
3935 if (ckWARN_d(WARN_INTERNAL))
3936 Perl_warner(aTHX_ WARN_INTERNAL, "Attempt to free unreferenced scalar");
3939 ATOMIC_DEC_AND_TEST(refcount_is_zero, SvREFCNT(sv));
3940 if (!refcount_is_zero)
3944 if (ckWARN_d(WARN_DEBUGGING))
3945 Perl_warner(aTHX_ WARN_DEBUGGING,
3946 "Attempt to free temp prematurely: SV 0x%"UVxf,
3951 if (SvREADONLY(sv) && SvIMMORTAL(sv)) {
3952 /* make sure SvREFCNT(sv)==0 happens very seldom */
3953 SvREFCNT(sv) = (~(U32)0)/2;
3964 Returns the length of the string in the SV. See also C<SvCUR>.
3970 Perl_sv_len(pTHX_ register SV *sv)
3979 len = mg_length(sv);
3981 junk = SvPV(sv, len);
3986 =for apidoc sv_len_utf8
3988 Returns the number of characters in the string in an SV, counting wide
3989 UTF8 bytes as a single character.
3995 Perl_sv_len_utf8(pTHX_ register SV *sv)
4006 len = mg_length(sv);
4009 s = (U8*)SvPV(sv, len);
4020 Perl_sv_pos_u2b(pTHX_ register SV *sv, I32* offsetp, I32* lenp)
4025 I32 uoffset = *offsetp;
4031 start = s = (U8*)SvPV(sv, len);
4033 while (s < send && uoffset--)
4037 *offsetp = s - start;
4041 while (s < send && ulen--)
4051 Perl_sv_pos_b2u(pTHX_ register SV *sv, I32* offsetp)
4060 s = (U8*)SvPV(sv, len);
4062 Perl_croak(aTHX_ "panic: bad byte offset");
4063 send = s + *offsetp;
4071 if (ckWARN_d(WARN_UTF8))
4072 Perl_warner(aTHX_ WARN_UTF8, "Malformed UTF-8 character");
4082 Returns a boolean indicating whether the strings in the two SVs are
4089 Perl_sv_eq(pTHX_ register SV *sv1, register SV *sv2)
4096 bool pv1tmp = FALSE;
4097 bool pv2tmp = FALSE;
4104 pv1 = SvPV(sv1, cur1);
4111 pv2 = SvPV(sv2, cur2);
4113 /* do not utf8ize the comparands as a side-effect */
4114 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4116 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4120 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4126 eq = memEQ(pv1, pv2, cur1);
4139 Compares the strings in two SVs. Returns -1, 0, or 1 indicating whether the
4140 string in C<sv1> is less than, equal to, or greater than the string in
4147 Perl_sv_cmp(pTHX_ register SV *sv1, register SV *sv2)
4152 bool pv1tmp = FALSE;
4153 bool pv2tmp = FALSE;
4160 pv1 = SvPV(sv1, cur1);
4167 pv2 = SvPV(sv2, cur2);
4169 /* do not utf8ize the comparands as a side-effect */
4170 if (cur1 && cur2 && SvUTF8(sv1) != SvUTF8(sv2) && !IN_BYTE) {
4172 pv2 = (char*)bytes_to_utf8((U8*)pv2, &cur2);
4176 pv1 = (char*)bytes_to_utf8((U8*)pv1, &cur1);
4182 cmp = cur2 ? -1 : 0;
4186 I32 retval = memcmp((void*)pv1, (void*)pv2, cur1 < cur2 ? cur1 : cur2);
4189 cmp = retval < 0 ? -1 : 1;
4190 } else if (cur1 == cur2) {
4193 cmp = cur1 < cur2 ? -1 : 1;
4206 =for apidoc sv_cmp_locale
4208 Compares the strings in two SVs in a locale-aware manner. See
4215 Perl_sv_cmp_locale(pTHX_ register SV *sv1, register SV *sv2)
4217 #ifdef USE_LOCALE_COLLATE
4223 if (PL_collation_standard)
4227 pv1 = sv1 ? sv_collxfrm(sv1, &len1) : (char *) NULL;
4229 pv2 = sv2 ? sv_collxfrm(sv2, &len2) : (char *) NULL;
4231 if (!pv1 || !len1) {
4242 retval = memcmp((void*)pv1, (void*)pv2, len1 < len2 ? len1 : len2);
4245 return retval < 0 ? -1 : 1;
4248 * When the result of collation is equality, that doesn't mean
4249 * that there are no differences -- some locales exclude some
4250 * characters from consideration. So to avoid false equalities,
4251 * we use the raw string as a tiebreaker.
4257 #endif /* USE_LOCALE_COLLATE */
4259 return sv_cmp(sv1, sv2);
4262 #ifdef USE_LOCALE_COLLATE
4264 * Any scalar variable may carry an 'o' magic that contains the
4265 * scalar data of the variable transformed to such a format that
4266 * a normal memory comparison can be used to compare the data
4267 * according to the locale settings.
4270 Perl_sv_collxfrm(pTHX_ SV *sv, STRLEN *nxp)
4274 mg = SvMAGICAL(sv) ? mg_find(sv, 'o') : (MAGIC *) NULL;
4275 if (!mg || !mg->mg_ptr || *(U32*)mg->mg_ptr != PL_collation_ix) {
4280 Safefree(mg->mg_ptr);
4282 if ((xf = mem_collxfrm(s, len, &xlen))) {
4283 if (SvREADONLY(sv)) {
4286 return xf + sizeof(PL_collation_ix);
4289 sv_magic(sv, 0, 'o', 0, 0);
4290 mg = mg_find(sv, 'o');
4303 if (mg && mg->mg_ptr) {
4305 return mg->mg_ptr + sizeof(PL_collation_ix);
4313 #endif /* USE_LOCALE_COLLATE */
4318 Get a line from the filehandle and store it into the SV, optionally
4319 appending to the currently-stored string.
4325 Perl_sv_gets(pTHX_ register SV *sv, register PerlIO *fp, I32 append)
4330 register STDCHAR rslast;
4331 register STDCHAR *bp;
4335 SV_CHECK_THINKFIRST(sv);
4336 (void)SvUPGRADE(sv, SVt_PV);
4340 if (RsSNARF(PL_rs)) {
4344 else if (RsRECORD(PL_rs)) {
4345 I32 recsize, bytesread;
4348 /* Grab the size of the record we're getting */
4349 recsize = SvIV(SvRV(PL_rs));
4350 (void)SvPOK_only(sv); /* Validate pointer */
4351 buffer = SvGROW(sv, recsize + 1);
4354 /* VMS wants read instead of fread, because fread doesn't respect */
4355 /* RMS record boundaries. This is not necessarily a good thing to be */
4356 /* doing, but we've got no other real choice */
4357 bytesread = PerlLIO_read(PerlIO_fileno(fp), buffer, recsize);
4359 bytesread = PerlIO_read(fp, buffer, recsize);
4361 SvCUR_set(sv, bytesread);
4362 buffer[bytesread] = '\0';
4363 return(SvCUR(sv) ? SvPVX(sv) : Nullch);
4365 else if (RsPARA(PL_rs)) {
4370 rsptr = SvPV(PL_rs, rslen);
4371 rslast = rslen ? rsptr[rslen - 1] : '\0';
4373 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4374 do { /* to make sure file boundaries work right */
4377 i = PerlIO_getc(fp);
4381 PerlIO_ungetc(fp,i);
4387 /* See if we know enough about I/O mechanism to cheat it ! */
4389 /* This used to be #ifdef test - it is made run-time test for ease
4390 of abstracting out stdio interface. One call should be cheap
4391 enough here - and may even be a macro allowing compile
4395 if (PerlIO_fast_gets(fp)) {
4398 * We're going to steal some values from the stdio struct
4399 * and put EVERYTHING in the innermost loop into registers.
4401 register STDCHAR *ptr;
4405 #if defined(VMS) && defined(PERLIO_IS_STDIO)
4406 /* An ungetc()d char is handled separately from the regular
4407 * buffer, so we getc() it back out and stuff it in the buffer.
4409 i = PerlIO_getc(fp);
4410 if (i == EOF) return 0;
4411 *(--((*fp)->_ptr)) = (unsigned char) i;
4415 /* Here is some breathtakingly efficient cheating */
4417 cnt = PerlIO_get_cnt(fp); /* get count into register */
4418 (void)SvPOK_only(sv); /* validate pointer */
4419 if (SvLEN(sv) - append <= cnt + 1) { /* make sure we have the room */
4420 if (cnt > 80 && SvLEN(sv) > append) {
4421 shortbuffered = cnt - SvLEN(sv) + append + 1;
4422 cnt -= shortbuffered;
4426 /* remember that cnt can be negative */
4427 SvGROW(sv, append + (cnt <= 0 ? 2 : (cnt + 1)));
4432 bp = (STDCHAR*)SvPVX(sv) + append; /* move these two too to registers */
4433 ptr = (STDCHAR*)PerlIO_get_ptr(fp);
4434 DEBUG_P(PerlIO_printf(Perl_debug_log,
4435 "Screamer: entering, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4436 DEBUG_P(PerlIO_printf(Perl_debug_log,
4437 "Screamer: entering: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4438 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4439 PTR2UV(PerlIO_has_base(fp) ? PerlIO_get_base(fp) : 0)));
4444 while (cnt > 0) { /* this | eat */
4446 if ((*bp++ = *ptr++) == rslast) /* really | dust */
4447 goto thats_all_folks; /* screams | sed :-) */
4451 Copy(ptr, bp, cnt, char); /* this | eat */
4452 bp += cnt; /* screams | dust */
4453 ptr += cnt; /* louder | sed :-) */
4458 if (shortbuffered) { /* oh well, must extend */
4459 cnt = shortbuffered;
4461 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4463 SvGROW(sv, SvLEN(sv) + append + cnt + 2);
4464 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4468 DEBUG_P(PerlIO_printf(Perl_debug_log,
4469 "Screamer: going to getc, ptr=%"UVuf", cnt=%ld\n",
4470 PTR2UV(ptr),(long)cnt));
4471 PerlIO_set_ptrcnt(fp, ptr, cnt); /* deregisterize cnt and ptr */
4472 DEBUG_P(PerlIO_printf(Perl_debug_log,
4473 "Screamer: pre: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4474 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4475 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4476 /* This used to call 'filbuf' in stdio form, but as that behaves like
4477 getc when cnt <= 0 we use PerlIO_getc here to avoid introducing
4478 another abstraction. */
4479 i = PerlIO_getc(fp); /* get more characters */
4480 DEBUG_P(PerlIO_printf(Perl_debug_log,
4481 "Screamer: post: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4482 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4483 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4484 cnt = PerlIO_get_cnt(fp);
4485 ptr = (STDCHAR*)PerlIO_get_ptr(fp); /* reregisterize cnt and ptr */
4486 DEBUG_P(PerlIO_printf(Perl_debug_log,
4487 "Screamer: after getc, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4489 if (i == EOF) /* all done for ever? */
4490 goto thats_really_all_folks;
4492 bpx = bp - (STDCHAR*)SvPVX(sv); /* box up before relocation */
4494 SvGROW(sv, bpx + cnt + 2);
4495 bp = (STDCHAR*)SvPVX(sv) + bpx; /* unbox after relocation */
4497 *bp++ = i; /* store character from PerlIO_getc */
4499 if (rslen && (STDCHAR)i == rslast) /* all done for now? */
4500 goto thats_all_folks;
4504 if ((rslen > 1 && (bp - (STDCHAR*)SvPVX(sv) < rslen)) ||
4505 memNE((char*)bp - rslen, rsptr, rslen))
4506 goto screamer; /* go back to the fray */
4507 thats_really_all_folks:
4509 cnt += shortbuffered;
4510 DEBUG_P(PerlIO_printf(Perl_debug_log,
4511 "Screamer: quitting, ptr=%"UVuf", cnt=%ld\n",PTR2UV(ptr),(long)cnt));
4512 PerlIO_set_ptrcnt(fp, ptr, cnt); /* put these back or we're in trouble */
4513 DEBUG_P(PerlIO_printf(Perl_debug_log,
4514 "Screamer: end: FILE * thinks ptr=%"UVuf", cnt=%ld, base=%"UVuf"\n",
4515 PTR2UV(PerlIO_get_ptr(fp)), (long)PerlIO_get_cnt(fp),
4516 PTR2UV(PerlIO_has_base (fp) ? PerlIO_get_base(fp) : 0)));
4518 SvCUR_set(sv, bp - (STDCHAR*)SvPVX(sv)); /* set length */
4519 DEBUG_P(PerlIO_printf(Perl_debug_log,
4520 "Screamer: done, len=%ld, string=|%.*s|\n",
4521 (long)SvCUR(sv),(int)SvCUR(sv),SvPVX(sv)));
4526 /*The big, slow, and stupid way */
4529 /* Need to work around EPOC SDK features */
4530 /* On WINS: MS VC5 generates calls to _chkstk, */
4531 /* if a `large' stack frame is allocated */
4532 /* gcc on MARM does not generate calls like these */
4538 register STDCHAR *bpe = buf + sizeof(buf);
4540 while ((i = PerlIO_getc(fp)) != EOF && (*bp++ = i) != rslast && bp < bpe)
4541 ; /* keep reading */
4545 cnt = PerlIO_read(fp,(char*)buf, sizeof(buf));
4546 /* Accomodate broken VAXC compiler, which applies U8 cast to
4547 * both args of ?: operator, causing EOF to change into 255
4549 if (cnt) { i = (U8)buf[cnt - 1]; } else { i = EOF; }
4553 sv_catpvn(sv, (char *) buf, cnt);
4555 sv_setpvn(sv, (char *) buf, cnt);
4557 if (i != EOF && /* joy */
4559 SvCUR(sv) < rslen ||
4560 memNE(SvPVX(sv) + SvCUR(sv) - rslen, rsptr, rslen)))
4564 * If we're reading from a TTY and we get a short read,
4565 * indicating that the user hit his EOF character, we need
4566 * to notice it now, because if we try to read from the TTY
4567 * again, the EOF condition will disappear.
4569 * The comparison of cnt to sizeof(buf) is an optimization
4570 * that prevents unnecessary calls to feof().
4574 if (!(cnt < sizeof(buf) && PerlIO_eof(fp)))
4579 if (RsPARA(PL_rs)) { /* have to do this both before and after */
4580 while (i != EOF) { /* to make sure file boundaries work right */
4581 i = PerlIO_getc(fp);
4583 PerlIO_ungetc(fp,i);
4589 return (SvCUR(sv) - append) ? SvPVX(sv) : Nullch;
4596 Auto-increment of the value in the SV.
4602 Perl_sv_inc(pTHX_ register SV *sv)
4611 if (SvTHINKFIRST(sv)) {
4612 if (SvREADONLY(sv)) {
4614 if (PL_curcop != &PL_compiling)
4615 Perl_croak(aTHX_ PL_no_modify);
4619 if (SvAMAGIC(sv) && AMG_CALLun(sv,inc))
4621 i = PTR2IV(SvRV(sv));
4626 flags = SvFLAGS(sv);
4627 if (flags & SVp_NOK) {
4628 (void)SvNOK_only(sv);
4632 if (flags & SVp_IOK) {
4634 if (SvUVX(sv) == UV_MAX)
4635 sv_setnv(sv, (NV)UV_MAX + 1.0);
4637 (void)SvIOK_only_UV(sv);
4640 if (SvIVX(sv) == IV_MAX)
4641 sv_setnv(sv, (NV)IV_MAX + 1.0);
4643 (void)SvIOK_only(sv);
4649 if (!(flags & SVp_POK) || !*SvPVX(sv)) {
4650 if ((flags & SVTYPEMASK) < SVt_PVNV)
4651 sv_upgrade(sv, SVt_NV);
4653 (void)SvNOK_only(sv);
4657 while (isALPHA(*d)) d++;
4658 while (isDIGIT(*d)) d++;
4660 sv_setnv(sv,Atof(SvPVX(sv)) + 1.0); /* punt */
4664 while (d >= SvPVX(sv)) {
4672 /* MKS: The original code here died if letters weren't consecutive.
4673 * at least it didn't have to worry about non-C locales. The
4674 * new code assumes that ('z'-'a')==('Z'-'A'), letters are
4675 * arranged in order (although not consecutively) and that only
4676 * [A-Za-z] are accepted by isALPHA in the C locale.
4678 if (*d != 'z' && *d != 'Z') {
4679 do { ++*d; } while (!isALPHA(*d));
4682 *(d--) -= 'z' - 'a';
4687 *(d--) -= 'z' - 'a' + 1;
4691 /* oh,oh, the number grew */
4692 SvGROW(sv, SvCUR(sv) + 2);
4694 for (d = SvPVX(sv) + SvCUR(sv); d > SvPVX(sv); d--)
4705 Auto-decrement of the value in the SV.
4711 Perl_sv_dec(pTHX_ register SV *sv)
4719 if (SvTHINKFIRST(sv)) {
4720 if (SvREADONLY(sv)) {
4722 if (PL_curcop != &PL_compiling)
4723 Perl_croak(aTHX_ PL_no_modify);
4727 if (SvAMAGIC(sv) && AMG_CALLun(sv,dec))
4729 i = PTR2IV(SvRV(sv));
4734 flags = SvFLAGS(sv);
4735 if (flags & SVp_NOK) {
4737 (void)SvNOK_only(sv);
4740 if (flags & SVp_IOK) {
4742 if (SvUVX(sv) == 0) {
4743 (void)SvIOK_only(sv);
4747 (void)SvIOK_only_UV(sv);
4751 if (SvIVX(sv) == IV_MIN)
4752 sv_setnv(sv, (NV)IV_MIN - 1.0);
4754 (void)SvIOK_only(sv);
4760 if (!(flags & SVp_POK)) {
4761 if ((flags & SVTYPEMASK) < SVt_PVNV)
4762 sv_upgrade(sv, SVt_NV);
4764 (void)SvNOK_only(sv);
4767 sv_setnv(sv,Atof(SvPVX(sv)) - 1.0); /* punt */
4771 =for apidoc sv_mortalcopy
4773 Creates a new SV which is a copy of the original SV. The new SV is marked
4779 /* Make a string that will exist for the duration of the expression
4780 * evaluation. Actually, it may have to last longer than that, but
4781 * hopefully we won't free it until it has been assigned to a
4782 * permanent location. */
4785 Perl_sv_mortalcopy(pTHX_ SV *oldstr)
4791 sv_setsv(sv,oldstr);
4793 PL_tmps_stack[++PL_tmps_ix] = sv;
4799 =for apidoc sv_newmortal
4801 Creates a new SV which is mortal. The reference count of the SV is set to 1.
4807 Perl_sv_newmortal(pTHX)
4813 SvFLAGS(sv) = SVs_TEMP;
4815 PL_tmps_stack[++PL_tmps_ix] = sv;
4820 =for apidoc sv_2mortal
4822 Marks an SV as mortal. The SV will be destroyed when the current context
4828 /* same thing without the copying */
4831 Perl_sv_2mortal(pTHX_ register SV *sv)
4836 if (SvREADONLY(sv) && SvIMMORTAL(sv))
4839 PL_tmps_stack[++PL_tmps_ix] = sv;
4847 Creates a new SV and copies a string into it. The reference count for the
4848 SV is set to 1. If C<len> is zero, Perl will compute the length using
4849 strlen(). For efficiency, consider using C<newSVpvn> instead.
4855 Perl_newSVpv(pTHX_ const char *s, STRLEN len)
4862 sv_setpvn(sv,s,len);
4867 =for apidoc newSVpvn
4869 Creates a new SV and copies a string into it. The reference count for the
4870 SV is set to 1. Note that if C<len> is zero, Perl will create a zero length
4871 string. You are responsible for ensuring that the source string is at least
4878 Perl_newSVpvn(pTHX_ const char *s, STRLEN len)
4883 sv_setpvn(sv,s,len);
4888 =for apidoc newSVpvn_share
4890 Creates a new SV and populates it with a string from
4891 the string table. Turns on READONLY and FAKE.
4892 The idea here is that as string table is used for shared hash
4893 keys these strings will have SvPVX == HeKEY and hash lookup
4894 will avoid string compare.
4900 Perl_newSVpvn_share(pTHX_ const char *src, STRLEN len, U32 hash)
4904 PERL_HASH(hash, src, len);
4906 sv_upgrade(sv, SVt_PVIV);
4907 SvPVX(sv) = sharepvn(src, len, hash);
4917 #if defined(PERL_IMPLICIT_CONTEXT)
4919 Perl_newSVpvf_nocontext(const char* pat, ...)
4924 va_start(args, pat);
4925 sv = vnewSVpvf(pat, &args);
4932 =for apidoc newSVpvf
4934 Creates a new SV an initialize it with the string formatted like
4941 Perl_newSVpvf(pTHX_ const char* pat, ...)
4945 va_start(args, pat);
4946 sv = vnewSVpvf(pat, &args);
4952 Perl_vnewSVpvf(pTHX_ const char* pat, va_list* args)
4956 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
4963 Creates a new SV and copies a floating point value into it.
4964 The reference count for the SV is set to 1.
4970 Perl_newSVnv(pTHX_ NV n)
4982 Creates a new SV and copies an integer into it. The reference count for the
4989 Perl_newSViv(pTHX_ IV i)
5001 Creates a new SV and copies an unsigned integer into it.
5002 The reference count for the SV is set to 1.
5008 Perl_newSVuv(pTHX_ UV u)
5018 =for apidoc newRV_noinc
5020 Creates an RV wrapper for an SV. The reference count for the original
5021 SV is B<not> incremented.
5027 Perl_newRV_noinc(pTHX_ SV *tmpRef)
5033 sv_upgrade(sv, SVt_RV);
5040 /* newRV_inc is #defined to newRV in sv.h */
5042 Perl_newRV(pTHX_ SV *tmpRef)
5044 return newRV_noinc(SvREFCNT_inc(tmpRef));
5050 Creates a new SV which is an exact duplicate of the original SV.
5055 /* make an exact duplicate of old */
5058 Perl_newSVsv(pTHX_ register SV *old)
5065 if (SvTYPE(old) == SVTYPEMASK) {
5066 if (ckWARN_d(WARN_INTERNAL))
5067 Perl_warner(aTHX_ WARN_INTERNAL, "semi-panic: attempt to dup freed string");
5082 Perl_sv_reset(pTHX_ register char *s, HV *stash)
5090 char todo[PERL_UCHAR_MAX+1];
5095 if (!*s) { /* reset ?? searches */
5096 for (pm = HvPMROOT(stash); pm; pm = pm->op_pmnext) {
5097 pm->op_pmdynflags &= ~PMdf_USED;
5102 /* reset variables */
5104 if (!HvARRAY(stash))
5107 Zero(todo, 256, char);
5109 i = (unsigned char)*s;
5113 max = (unsigned char)*s++;
5114 for ( ; i <= max; i++) {
5117 for (i = 0; i <= (I32) HvMAX(stash); i++) {
5118 for (entry = HvARRAY(stash)[i];
5120 entry = HeNEXT(entry))
5122 if (!todo[(U8)*HeKEY(entry)])
5124 gv = (GV*)HeVAL(entry);
5126 if (SvTHINKFIRST(sv)) {
5127 if (!SvREADONLY(sv) && SvROK(sv))
5132 if (SvTYPE(sv) >= SVt_PV) {
5134 if (SvPVX(sv) != Nullch)
5141 if (GvHV(gv) && !HvNAME(GvHV(gv))) {
5143 #if !defined( VMS) && !defined(EPOC) /* VMS has no environ array */
5145 environ[0] = Nullch;
5154 Perl_sv_2io(pTHX_ SV *sv)
5160 switch (SvTYPE(sv)) {
5168 Perl_croak(aTHX_ "Bad filehandle: %s", GvNAME(gv));
5172 Perl_croak(aTHX_ PL_no_usym, "filehandle");
5174 return sv_2io(SvRV(sv));
5175 gv = gv_fetchpv(SvPV(sv,n_a), FALSE, SVt_PVIO);
5181 Perl_croak(aTHX_ "Bad filehandle: %s", SvPV(sv,n_a));
5188 Perl_sv_2cv(pTHX_ SV *sv, HV **st, GV **gvp, I32 lref)
5195 return *gvp = Nullgv, Nullcv;
5196 switch (SvTYPE(sv)) {
5216 SV **sp = &sv; /* Used in tryAMAGICunDEREF macro. */
5217 tryAMAGICunDEREF(to_cv);
5220 if (SvTYPE(sv) == SVt_PVCV) {
5229 Perl_croak(aTHX_ "Not a subroutine reference");
5234 gv = gv_fetchpv(SvPV(sv, n_a), lref, SVt_PVCV);
5240 if (lref && !GvCVu(gv)) {
5243 tmpsv = NEWSV(704,0);
5244 gv_efullname3(tmpsv, gv, Nullch);
5245 /* XXX this is probably not what they think they're getting.
5246 * It has the same effect as "sub name;", i.e. just a forward
5248 newSUB(start_subparse(FALSE, 0),
5249 newSVOP(OP_CONST, 0, tmpsv),
5254 Perl_croak(aTHX_ "Unable to create sub named \"%s\"", SvPV(sv,n_a));
5263 Returns true if the SV has a true value by Perl's rules.
5269 Perl_sv_true(pTHX_ register SV *sv)
5276 if ((tXpv = (XPV*)SvANY(sv)) &&
5277 (tXpv->xpv_cur > 1 ||
5278 (tXpv->xpv_cur && *tXpv->xpv_pv != '0')))
5285 return SvIVX(sv) != 0;
5288 return SvNVX(sv) != 0.0;
5290 return sv_2bool(sv);
5296 Perl_sv_iv(pTHX_ register SV *sv)
5300 return (IV)SvUVX(sv);
5307 Perl_sv_uv(pTHX_ register SV *sv)
5312 return (UV)SvIVX(sv);
5318 Perl_sv_nv(pTHX_ register SV *sv)
5326 Perl_sv_pv(pTHX_ SV *sv)
5333 return sv_2pv(sv, &n_a);
5337 Perl_sv_pvn(pTHX_ SV *sv, STRLEN *lp)
5343 return sv_2pv(sv, lp);
5347 =for apidoc sv_pvn_force
5349 Get a sensible string out of the SV somehow.
5355 Perl_sv_pvn_force(pTHX_ SV *sv, STRLEN *lp)
5359 if (SvTHINKFIRST(sv) && !SvROK(sv))
5360 sv_force_normal(sv);
5366 if (SvTYPE(sv) > SVt_PVLV && SvTYPE(sv) != SVt_PVFM) {
5368 Perl_croak(aTHX_ "Can't coerce %s to string in %s", sv_reftype(sv,0),
5369 PL_op_name[PL_op->op_type]);
5373 if (s != SvPVX(sv)) { /* Almost, but not quite, sv_setpvn() */
5378 (void)SvUPGRADE(sv, SVt_PV); /* Never FALSE */
5379 SvGROW(sv, len + 1);
5380 Move(s,SvPVX(sv),len,char);
5385 SvPOK_on(sv); /* validate pointer */
5387 DEBUG_c(PerlIO_printf(Perl_debug_log, "0x%"UVxf" 2pv(%s)\n",
5388 PTR2UV(sv),SvPVX(sv)));
5395 Perl_sv_pvbyte(pTHX_ SV *sv)
5401 Perl_sv_pvbyten(pTHX_ SV *sv, STRLEN *lp)
5403 return sv_pvn(sv,lp);
5407 Perl_sv_pvbyten_force(pTHX_ SV *sv, STRLEN *lp)
5409 return sv_pvn_force(sv,lp);
5413 Perl_sv_pvutf8(pTHX_ SV *sv)
5415 sv_utf8_upgrade(sv);
5420 Perl_sv_pvutf8n(pTHX_ SV *sv, STRLEN *lp)
5422 sv_utf8_upgrade(sv);
5423 return sv_pvn(sv,lp);
5427 =for apidoc sv_pvutf8n_force
5429 Get a sensible UTF8-encoded string out of the SV somehow. See
5436 Perl_sv_pvutf8n_force(pTHX_ SV *sv, STRLEN *lp)
5438 sv_utf8_upgrade(sv);
5439 return sv_pvn_force(sv,lp);
5443 =for apidoc sv_reftype
5445 Returns a string describing what the SV is a reference to.
5451 Perl_sv_reftype(pTHX_ SV *sv, int ob)
5453 if (ob && SvOBJECT(sv))
5454 return HvNAME(SvSTASH(sv));
5456 switch (SvTYPE(sv)) {
5470 case SVt_PVLV: return "LVALUE";
5471 case SVt_PVAV: return "ARRAY";
5472 case SVt_PVHV: return "HASH";
5473 case SVt_PVCV: return "CODE";
5474 case SVt_PVGV: return "GLOB";
5475 case SVt_PVFM: return "FORMAT";
5476 case SVt_PVIO: return "IO";
5477 default: return "UNKNOWN";
5483 =for apidoc sv_isobject
5485 Returns a boolean indicating whether the SV is an RV pointing to a blessed
5486 object. If the SV is not an RV, or if the object is not blessed, then this
5493 Perl_sv_isobject(pTHX_ SV *sv)
5510 Returns a boolean indicating whether the SV is blessed into the specified
5511 class. This does not check for subtypes; use C<sv_derived_from> to verify
5512 an inheritance relationship.
5518 Perl_sv_isa(pTHX_ SV *sv, const char *name)
5530 return strEQ(HvNAME(SvSTASH(sv)), name);
5536 Creates a new SV for the RV, C<rv>, to point to. If C<rv> is not an RV then
5537 it will be upgraded to one. If C<classname> is non-null then the new SV will
5538 be blessed in the specified package. The new SV is returned and its
5539 reference count is 1.
5545 Perl_newSVrv(pTHX_ SV *rv, const char *classname)
5552 SV_CHECK_THINKFIRST(rv);
5555 if (SvTYPE(rv) >= SVt_PVMG) {
5556 U32 refcnt = SvREFCNT(rv);
5560 SvREFCNT(rv) = refcnt;
5563 if (SvTYPE(rv) < SVt_RV)
5564 sv_upgrade(rv, SVt_RV);
5565 else if (SvTYPE(rv) > SVt_RV) {
5566 (void)SvOOK_off(rv);
5567 if (SvPVX(rv) && SvLEN(rv))
5568 Safefree(SvPVX(rv));
5578 HV* stash = gv_stashpv(classname, TRUE);
5579 (void)sv_bless(rv, stash);
5585 =for apidoc sv_setref_pv
5587 Copies a pointer into a new SV, optionally blessing the SV. The C<rv>
5588 argument will be upgraded to an RV. That RV will be modified to point to
5589 the new SV. If the C<pv> argument is NULL then C<PL_sv_undef> will be placed
5590 into the SV. The C<classname> argument indicates the package for the
5591 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5592 will be returned and will have a reference count of 1.
5594 Do not use with other Perl types such as HV, AV, SV, CV, because those
5595 objects will become corrupted by the pointer copy process.
5597 Note that C<sv_setref_pvn> copies the string while this copies the pointer.
5603 Perl_sv_setref_pv(pTHX_ SV *rv, const char *classname, void *pv)
5606 sv_setsv(rv, &PL_sv_undef);
5610 sv_setiv(newSVrv(rv,classname), PTR2IV(pv));
5615 =for apidoc sv_setref_iv
5617 Copies an integer into a new SV, optionally blessing the SV. The C<rv>
5618 argument will be upgraded to an RV. That RV will be modified to point to
5619 the new SV. The C<classname> argument indicates the package for the
5620 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5621 will be returned and will have a reference count of 1.
5627 Perl_sv_setref_iv(pTHX_ SV *rv, const char *classname, IV iv)
5629 sv_setiv(newSVrv(rv,classname), iv);
5634 =for apidoc sv_setref_nv
5636 Copies a double into a new SV, optionally blessing the SV. The C<rv>
5637 argument will be upgraded to an RV. That RV will be modified to point to
5638 the new SV. The C<classname> argument indicates the package for the
5639 blessing. Set C<classname> to C<Nullch> to avoid the blessing. The new SV
5640 will be returned and will have a reference count of 1.
5646 Perl_sv_setref_nv(pTHX_ SV *rv, const char *classname, NV nv)
5648 sv_setnv(newSVrv(rv,classname), nv);
5653 =for apidoc sv_setref_pvn
5655 Copies a string into a new SV, optionally blessing the SV. The length of the
5656 string must be specified with C<n>. The C<rv> argument will be upgraded to
5657 an RV. That RV will be modified to point to the new SV. The C<classname>
5658 argument indicates the package for the blessing. Set C<classname> to
5659 C<Nullch> to avoid the blessing. The new SV will be returned and will have
5660 a reference count of 1.
5662 Note that C<sv_setref_pv> copies the pointer while this copies the string.
5668 Perl_sv_setref_pvn(pTHX_ SV *rv, const char *classname, char *pv, STRLEN n)
5670 sv_setpvn(newSVrv(rv,classname), pv, n);
5675 =for apidoc sv_bless
5677 Blesses an SV into a specified package. The SV must be an RV. The package
5678 must be designated by its stash (see C<gv_stashpv()>). The reference count
5679 of the SV is unaffected.
5685 Perl_sv_bless(pTHX_ SV *sv, HV *stash)
5690 Perl_croak(aTHX_ "Can't bless non-reference value");
5692 if (SvFLAGS(tmpRef) & (SVs_OBJECT|SVf_READONLY)) {
5693 if (SvREADONLY(tmpRef))
5694 Perl_croak(aTHX_ PL_no_modify);
5695 if (SvOBJECT(tmpRef)) {
5696 if (SvTYPE(tmpRef) != SVt_PVIO)
5698 SvREFCNT_dec(SvSTASH(tmpRef));
5701 SvOBJECT_on(tmpRef);
5702 if (SvTYPE(tmpRef) != SVt_PVIO)
5704 (void)SvUPGRADE(tmpRef, SVt_PVMG);
5705 SvSTASH(tmpRef) = (HV*)SvREFCNT_inc(stash);
5716 S_sv_unglob(pTHX_ SV *sv)
5720 assert(SvTYPE(sv) == SVt_PVGV);
5725 SvREFCNT_dec(GvSTASH(sv));
5726 GvSTASH(sv) = Nullhv;
5728 sv_unmagic(sv, '*');
5729 Safefree(GvNAME(sv));
5732 /* need to keep SvANY(sv) in the right arena */
5733 xpvmg = new_XPVMG();
5734 StructCopy(SvANY(sv), xpvmg, XPVMG);
5735 del_XPVGV(SvANY(sv));
5738 SvFLAGS(sv) &= ~SVTYPEMASK;
5739 SvFLAGS(sv) |= SVt_PVMG;
5743 =for apidoc sv_unref
5745 Unsets the RV status of the SV, and decrements the reference count of
5746 whatever was being referenced by the RV. This can almost be thought of
5747 as a reversal of C<newSVrv>. See C<SvROK_off>.
5753 Perl_sv_unref(pTHX_ SV *sv)
5757 if (SvWEAKREF(sv)) {
5765 if (SvREFCNT(rv) != 1 || SvREADONLY(rv))
5768 sv_2mortal(rv); /* Schedule for freeing later */
5772 Perl_sv_taint(pTHX_ SV *sv)
5774 sv_magic((sv), Nullsv, 't', Nullch, 0);
5778 Perl_sv_untaint(pTHX_ SV *sv)
5780 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5781 MAGIC *mg = mg_find(sv, 't');
5788 Perl_sv_tainted(pTHX_ SV *sv)
5790 if (SvTYPE(sv) >= SVt_PVMG && SvMAGIC(sv)) {
5791 MAGIC *mg = mg_find(sv, 't');
5792 if (mg && ((mg->mg_len & 1) || ((mg->mg_len & 2) && mg->mg_obj == sv)))
5799 =for apidoc sv_setpviv
5801 Copies an integer into the given SV, also updating its string value.
5802 Does not handle 'set' magic. See C<sv_setpviv_mg>.
5808 Perl_sv_setpviv(pTHX_ SV *sv, IV iv)
5810 char buf[TYPE_CHARS(UV)];
5812 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5814 sv_setpvn(sv, ptr, ebuf - ptr);
5819 =for apidoc sv_setpviv_mg
5821 Like C<sv_setpviv>, but also handles 'set' magic.
5827 Perl_sv_setpviv_mg(pTHX_ SV *sv, IV iv)
5829 char buf[TYPE_CHARS(UV)];
5831 char *ptr = uiv_2buf(buf, iv, 0, 0, &ebuf);
5833 sv_setpvn(sv, ptr, ebuf - ptr);
5837 #if defined(PERL_IMPLICIT_CONTEXT)
5839 Perl_sv_setpvf_nocontext(SV *sv, const char* pat, ...)
5843 va_start(args, pat);
5844 sv_vsetpvf(sv, pat, &args);
5850 Perl_sv_setpvf_mg_nocontext(SV *sv, const char* pat, ...)
5854 va_start(args, pat);
5855 sv_vsetpvf_mg(sv, pat, &args);
5861 =for apidoc sv_setpvf
5863 Processes its arguments like C<sprintf> and sets an SV to the formatted
5864 output. Does not handle 'set' magic. See C<sv_setpvf_mg>.
5870 Perl_sv_setpvf(pTHX_ SV *sv, const char* pat, ...)
5873 va_start(args, pat);
5874 sv_vsetpvf(sv, pat, &args);
5879 Perl_sv_vsetpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5881 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5885 =for apidoc sv_setpvf_mg
5887 Like C<sv_setpvf>, but also handles 'set' magic.
5893 Perl_sv_setpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5896 va_start(args, pat);
5897 sv_vsetpvf_mg(sv, pat, &args);
5902 Perl_sv_vsetpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5904 sv_vsetpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5908 #if defined(PERL_IMPLICIT_CONTEXT)
5910 Perl_sv_catpvf_nocontext(SV *sv, const char* pat, ...)
5914 va_start(args, pat);
5915 sv_vcatpvf(sv, pat, &args);
5920 Perl_sv_catpvf_mg_nocontext(SV *sv, const char* pat, ...)
5924 va_start(args, pat);
5925 sv_vcatpvf_mg(sv, pat, &args);
5931 =for apidoc sv_catpvf
5933 Processes its arguments like C<sprintf> and appends the formatted output
5934 to an SV. Handles 'get' magic, but not 'set' magic. C<SvSETMAGIC()> must
5935 typically be called after calling this function to handle 'set' magic.
5941 Perl_sv_catpvf(pTHX_ SV *sv, const char* pat, ...)
5944 va_start(args, pat);
5945 sv_vcatpvf(sv, pat, &args);
5950 Perl_sv_vcatpvf(pTHX_ SV *sv, const char* pat, va_list* args)
5952 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5956 =for apidoc sv_catpvf_mg
5958 Like C<sv_catpvf>, but also handles 'set' magic.
5964 Perl_sv_catpvf_mg(pTHX_ SV *sv, const char* pat, ...)
5967 va_start(args, pat);
5968 sv_vcatpvf_mg(sv, pat, &args);
5973 Perl_sv_vcatpvf_mg(pTHX_ SV *sv, const char* pat, va_list* args)
5975 sv_vcatpvfn(sv, pat, strlen(pat), args, Null(SV**), 0, Null(bool*));
5980 =for apidoc sv_vsetpvfn
5982 Works like C<vcatpvfn> but copies the text into the SV instead of
5989 Perl_sv_vsetpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
5991 sv_setpvn(sv, "", 0);
5992 sv_vcatpvfn(sv, pat, patlen, args, svargs, svmax, maybe_tainted);
5996 =for apidoc sv_vcatpvfn
5998 Processes its arguments like C<vsprintf> and appends the formatted output
5999 to an SV. Uses an array of SVs if the C style variable argument list is
6000 missing (NULL). When running with taint checks enabled, indicates via
6001 C<maybe_tainted> if results are untrustworthy (often due to the use of
6008 Perl_sv_vcatpvfn(pTHX_ SV *sv, const char *pat, STRLEN patlen, va_list *args, SV **svargs, I32 svmax, bool *maybe_tainted)
6016 static char nullstr[] = "(null)";
6019 /* no matter what, this is a string now */
6020 (void)SvPV_force(sv, origlen);
6022 /* special-case "", "%s", and "%_" */
6025 if (patlen == 2 && pat[0] == '%') {
6029 char *s = va_arg(*args, char*);
6030 sv_catpv(sv, s ? s : nullstr);
6032 else if (svix < svmax) {
6033 sv_catsv(sv, *svargs);
6034 if (DO_UTF8(*svargs))
6040 argsv = va_arg(*args, SV*);
6041 sv_catsv(sv, argsv);
6046 /* See comment on '_' below */
6051 patend = (char*)pat + patlen;
6052 for (p = (char*)pat; p < patend; p = q) {
6055 bool vectorize = FALSE;
6062 bool has_precis = FALSE;
6064 bool is_utf = FALSE;
6067 U8 utf8buf[UTF8_MAXLEN];
6068 STRLEN esignlen = 0;
6070 char *eptr = Nullch;
6072 /* Times 4: a decimal digit takes more than 3 binary digits.
6073 * NV_DIG: mantissa takes than many decimal digits.
6074 * Plus 32: Playing safe. */
6075 char ebuf[IV_DIG * 4 + NV_DIG + 32];
6076 /* large enough for "%#.#f" --chip */
6077 /* what about long double NVs? --jhi */
6080 U8 *vecstr = Null(U8*);
6092 STRLEN dotstrlen = 1;
6093 I32 epix = 0; /* explicit parameter index */
6094 I32 ewix = 0; /* explicit width index */
6095 bool asterisk = FALSE;
6097 for (q = p; q < patend && *q != '%'; ++q) ;
6099 sv_catpvn(sv, p, q - p);
6128 case '*': /* printf("%*vX",":",$ipv6addr) */
6133 vecsv = va_arg(*args, SV*);
6134 else if (svix < svmax)
6135 vecsv = svargs[svix++];
6138 dotstr = SvPVx(vecsv,dotstrlen);
6166 case '1': case '2': case '3':
6167 case '4': case '5': case '6':
6168 case '7': case '8': case '9':
6171 width = width * 10 + (*q++ - '0');
6173 if (asterisk && ewix == 0) {
6178 } else if (epix == 0) {
6190 i = va_arg(*args, int);
6192 i = (ewix ? ewix <= svmax : svix < svmax) ?
6193 SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6195 width = (i < 0) ? -i : i;
6204 i = va_arg(*args, int);
6206 i = (ewix ? ewix <= svmax : svix < svmax)
6207 ? SvIVx(svargs[ewix ? ewix-1 : svix++]) : 0;
6208 precis = (i < 0) ? 0 : i;
6214 precis = precis * 10 + (*q++ - '0');
6221 vecsv = va_arg(*args, SV*);
6222 vecstr = (U8*)SvPVx(vecsv,veclen);
6223 utf = DO_UTF8(vecsv);
6225 else if (epix ? epix <= svmax : svix < svmax) {
6226 vecsv = svargs[epix ? epix-1 : svix++];
6227 vecstr = (U8*)SvPVx(vecsv,veclen);
6228 utf = DO_UTF8(vecsv);
6239 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6250 #if defined(HAS_QUAD) || (defined(HAS_LONG_DOUBLE) && defined(USE_LONG_DOUBLE))
6251 if (*(q + 1) == 'l') { /* lld, llf */
6278 uv = va_arg(*args, int);
6280 uv = (epix ? epix <= svmax : svix < svmax) ?
6281 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6282 if ((uv > 255 || (uv > 127 && SvUTF8(sv))) && !IN_BYTE) {
6283 eptr = (char*)utf8buf;
6284 elen = uv_to_utf8((U8*)eptr, uv) - utf8buf;
6296 eptr = va_arg(*args, char*);
6298 #ifdef MACOS_TRADITIONAL
6299 /* On MacOS, %#s format is used for Pascal strings */
6304 elen = strlen(eptr);
6307 elen = sizeof nullstr - 1;
6310 else if (epix ? epix <= svmax : svix < svmax) {
6311 argsv = svargs[epix ? epix-1 : svix++];
6312 eptr = SvPVx(argsv, elen);
6313 if (DO_UTF8(argsv)) {
6314 if (has_precis && precis < elen) {
6316 sv_pos_u2b(argsv, &p, 0); /* sticks at end */
6319 if (width) { /* fudge width (can't fudge elen) */
6320 width += elen - sv_len_utf8(argsv);
6329 * The "%_" hack might have to be changed someday,
6330 * if ISO or ANSI decide to use '_' for something.
6331 * So we keep it hidden from users' code.
6335 argsv = va_arg(*args,SV*);
6336 eptr = SvPVx(argsv, elen);
6342 if (has_precis && elen > precis)
6352 uv = PTR2UV(va_arg(*args, void*));
6354 uv = (epix ? epix <= svmax : svix < svmax) ?
6355 PTR2UV(svargs[epix ? epix-1 : svix++]) : 0;
6375 iv = (IV)utf8_to_uv(vecstr, veclen, &ulen, 0);
6385 case 'h': iv = (short)va_arg(*args, int); break;
6386 default: iv = va_arg(*args, int); break;
6387 case 'l': iv = va_arg(*args, long); break;
6388 case 'V': iv = va_arg(*args, IV); break;
6390 case 'q': iv = va_arg(*args, Quad_t); break;
6395 iv = (epix ? epix <= svmax : svix < svmax) ?
6396 SvIVx(svargs[epix ? epix-1 : svix++]) : 0;
6398 case 'h': iv = (short)iv; break;
6400 case 'l': iv = (long)iv; break;
6403 case 'q': iv = (Quad_t)iv; break;
6410 esignbuf[esignlen++] = plus;
6414 esignbuf[esignlen++] = '-';
6458 uv = utf8_to_uv(vecstr, veclen, &ulen, 0);
6468 case 'h': uv = (unsigned short)va_arg(*args, unsigned); break;
6469 default: uv = va_arg(*args, unsigned); break;
6470 case 'l': uv = va_arg(*args, unsigned long); break;
6471 case 'V': uv = va_arg(*args, UV); break;
6473 case 'q': uv = va_arg(*args, Quad_t); break;
6478 uv = (epix ? epix <= svmax : svix < svmax) ?
6479 SvUVx(svargs[epix ? epix-1 : svix++]) : 0;
6481 case 'h': uv = (unsigned short)uv; break;
6483 case 'l': uv = (unsigned long)uv; break;
6486 case 'q': uv = (Quad_t)uv; break;
6492 eptr = ebuf + sizeof ebuf;
6498 p = (char*)((c == 'X')
6499 ? "0123456789ABCDEF" : "0123456789abcdef");
6505 esignbuf[esignlen++] = '0';
6506 esignbuf[esignlen++] = c; /* 'x' or 'X' */
6512 *--eptr = '0' + dig;
6514 if (alt && *eptr != '0')
6520 *--eptr = '0' + dig;
6523 esignbuf[esignlen++] = '0';
6524 esignbuf[esignlen++] = 'b';
6527 default: /* it had better be ten or less */
6528 #if defined(PERL_Y2KWARN)
6529 if (ckWARN(WARN_Y2K)) {
6531 char *s = SvPV(sv,n);
6532 if (n >= 2 && s[n-2] == '1' && s[n-1] == '9'
6533 && (n == 2 || !isDIGIT(s[n-3])))
6535 Perl_warner(aTHX_ WARN_Y2K,
6536 "Possible Y2K bug: %%%c %s",
6537 c, "format string following '19'");
6543 *--eptr = '0' + dig;
6544 } while (uv /= base);
6547 elen = (ebuf + sizeof ebuf) - eptr;
6550 zeros = precis - elen;
6551 else if (precis == 0 && elen == 1 && *eptr == '0')
6556 /* FLOATING POINT */
6559 c = 'f'; /* maybe %F isn't supported here */
6565 /* This is evil, but floating point is even more evil */
6569 nv = va_arg(*args, NV);
6571 nv = (epix ? epix <= svmax : svix < svmax) ?
6572 SvNVx(svargs[epix ? epix-1 : svix++]) : 0.0;
6575 if (c != 'e' && c != 'E') {
6577 (void)Perl_frexp(nv, &i);
6578 if (i == PERL_INT_MIN)
6579 Perl_die(aTHX_ "panic: frexp");
6581 need = BIT_DIGITS(i);
6583 need += has_precis ? precis : 6; /* known default */
6587 need += 20; /* fudge factor */
6588 if (PL_efloatsize < need) {
6589 Safefree(PL_efloatbuf);
6590 PL_efloatsize = need + 20; /* more fudge */
6591 New(906, PL_efloatbuf, PL_efloatsize, char);
6592 PL_efloatbuf[0] = '\0';
6595 eptr = ebuf + sizeof ebuf;
6598 #if defined(USE_LONG_DOUBLE) && defined(PERL_PRIfldbl)
6600 /* Copy the one or more characters in a long double
6601 * format before the 'base' ([efgEFG]) character to
6602 * the format string. */
6603 static char const prifldbl[] = PERL_PRIfldbl;
6604 char const *p = prifldbl + sizeof(prifldbl) - 3;
6605 while (p >= prifldbl) { *--eptr = *p--; }
6610 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6615 do { *--eptr = '0' + (base % 10); } while (base /= 10);
6627 (void)sprintf(PL_efloatbuf, eptr, nv);
6629 eptr = PL_efloatbuf;
6630 elen = strlen(PL_efloatbuf);
6637 i = SvCUR(sv) - origlen;
6640 case 'h': *(va_arg(*args, short*)) = i; break;
6641 default: *(va_arg(*args, int*)) = i; break;
6642 case 'l': *(va_arg(*args, long*)) = i; break;
6643 case 'V': *(va_arg(*args, IV*)) = i; break;
6645 case 'q': *(va_arg(*args, Quad_t*)) = i; break;
6649 else if (epix ? epix <= svmax : svix < svmax)
6650 sv_setuv_mg(svargs[epix ? epix-1 : svix++], (UV)i);
6651 continue; /* not "break" */
6658 if (!args && ckWARN(WARN_PRINTF) &&
6659 (PL_op->op_type == OP_PRTF || PL_op->op_type == OP_SPRINTF)) {
6660 SV *msg = sv_newmortal();
6661 Perl_sv_setpvf(aTHX_ msg, "Invalid conversion in %s: ",
6662 (PL_op->op_type == OP_PRTF) ? "printf" : "sprintf");
6665 Perl_sv_catpvf(aTHX_ msg,
6666 "\"%%%c\"", c & 0xFF);
6668 Perl_sv_catpvf(aTHX_ msg,
6669 "\"%%\\%03"UVof"\"",
6672 sv_catpv(msg, "end of string");
6673 Perl_warner(aTHX_ WARN_PRINTF, "%"SVf, msg); /* yes, this is reentrant */
6676 /* output mangled stuff ... */
6682 /* ... right here, because formatting flags should not apply */
6683 SvGROW(sv, SvCUR(sv) + elen + 1);
6685 memcpy(p, eptr, elen);
6688 SvCUR(sv) = p - SvPVX(sv);
6689 continue; /* not "break" */
6692 have = esignlen + zeros + elen;
6693 need = (have > width ? have : width);
6696 SvGROW(sv, SvCUR(sv) + need + dotstrlen + 1);
6698 if (esignlen && fill == '0') {
6699 for (i = 0; i < esignlen; i++)
6703 memset(p, fill, gap);
6706 if (esignlen && fill != '0') {
6707 for (i = 0; i < esignlen; i++)
6711 for (i = zeros; i; i--)
6715 memcpy(p, eptr, elen);
6719 memset(p, ' ', gap);
6724 memcpy(p, dotstr, dotstrlen);
6728 vectorize = FALSE; /* done iterating over vecstr */
6733 SvCUR(sv) = p - SvPVX(sv);
6741 #if defined(USE_ITHREADS)
6743 #if defined(USE_THREADS)
6744 # include "error: USE_THREADS and USE_ITHREADS are incompatible"
6747 #ifndef GpREFCNT_inc
6748 # define GpREFCNT_inc(gp) ((gp) ? (++(gp)->gp_refcnt, (gp)) : (GP*)NULL)
6752 #define sv_dup_inc(s) SvREFCNT_inc(sv_dup(s))
6753 #define av_dup(s) (AV*)sv_dup((SV*)s)
6754 #define av_dup_inc(s) (AV*)SvREFCNT_inc(sv_dup((SV*)s))
6755 #define hv_dup(s) (HV*)sv_dup((SV*)s)
6756 #define hv_dup_inc(s) (HV*)SvREFCNT_inc(sv_dup((SV*)s))
6757 #define cv_dup(s) (CV*)sv_dup((SV*)s)
6758 #define cv_dup_inc(s) (CV*)SvREFCNT_inc(sv_dup((SV*)s))
6759 #define io_dup(s) (IO*)sv_dup((SV*)s)
6760 #define io_dup_inc(s) (IO*)SvREFCNT_inc(sv_dup((SV*)s))
6761 #define gv_dup(s) (GV*)sv_dup((SV*)s)
6762 #define gv_dup_inc(s) (GV*)SvREFCNT_inc(sv_dup((SV*)s))
6763 #define SAVEPV(p) (p ? savepv(p) : Nullch)
6764 #define SAVEPVN(p,n) (p ? savepvn(p,n) : Nullch)
6767 Perl_re_dup(pTHX_ REGEXP *r)
6769 /* XXX fix when pmop->op_pmregexp becomes shared */
6770 return ReREFCNT_inc(r);
6774 Perl_fp_dup(pTHX_ PerlIO *fp, char type)
6778 return (PerlIO*)NULL;
6780 /* look for it in the table first */
6781 ret = (PerlIO*)ptr_table_fetch(PL_ptr_table, fp);
6785 /* create anew and remember what it is */
6786 ret = PerlIO_fdupopen(fp);
6787 ptr_table_store(PL_ptr_table, fp, ret);
6792 Perl_dirp_dup(pTHX_ DIR *dp)
6801 Perl_gp_dup(pTHX_ GP *gp)
6806 /* look for it in the table first */
6807 ret = (GP*)ptr_table_fetch(PL_ptr_table, gp);
6811 /* create anew and remember what it is */
6812 Newz(0, ret, 1, GP);
6813 ptr_table_store(PL_ptr_table, gp, ret);
6816 ret->gp_refcnt = 0; /* must be before any other dups! */
6817 ret->gp_sv = sv_dup_inc(gp->gp_sv);
6818 ret->gp_io = io_dup_inc(gp->gp_io);
6819 ret->gp_form = cv_dup_inc(gp->gp_form);
6820 ret->gp_av = av_dup_inc(gp->gp_av);
6821 ret->gp_hv = hv_dup_inc(gp->gp_hv);
6822 ret->gp_egv = gv_dup(gp->gp_egv); /* GvEGV is not refcounted */
6823 ret->gp_cv = cv_dup_inc(gp->gp_cv);
6824 ret->gp_cvgen = gp->gp_cvgen;
6825 ret->gp_flags = gp->gp_flags;
6826 ret->gp_line = gp->gp_line;
6827 ret->gp_file = gp->gp_file; /* points to COP.cop_file */
6832 Perl_mg_dup(pTHX_ MAGIC *mg)
6834 MAGIC *mgret = (MAGIC*)NULL;
6837 return (MAGIC*)NULL;
6838 /* look for it in the table first */
6839 mgret = (MAGIC*)ptr_table_fetch(PL_ptr_table, mg);
6843 for (; mg; mg = mg->mg_moremagic) {
6845 Newz(0, nmg, 1, MAGIC);
6849 mgprev->mg_moremagic = nmg;
6850 nmg->mg_virtual = mg->mg_virtual; /* XXX copy dynamic vtable? */
6851 nmg->mg_private = mg->mg_private;
6852 nmg->mg_type = mg->mg_type;
6853 nmg->mg_flags = mg->mg_flags;
6854 if (mg->mg_type == 'r') {
6855 nmg->mg_obj = (SV*)re_dup((REGEXP*)mg->mg_obj);
6858 nmg->mg_obj = (mg->mg_flags & MGf_REFCOUNTED)
6859 ? sv_dup_inc(mg->mg_obj)
6860 : sv_dup(mg->mg_obj);
6862 nmg->mg_len = mg->mg_len;
6863 nmg->mg_ptr = mg->mg_ptr; /* XXX random ptr? */
6864 if (mg->mg_ptr && mg->mg_type != 'g') {
6865 if (mg->mg_len >= 0) {
6866 nmg->mg_ptr = SAVEPVN(mg->mg_ptr, mg->mg_len);
6867 if (mg->mg_type == 'c' && AMT_AMAGIC((AMT*)mg->mg_ptr)) {
6868 AMT *amtp = (AMT*)mg->mg_ptr;
6869 AMT *namtp = (AMT*)nmg->mg_ptr;
6871 for (i = 1; i < NofAMmeth; i++) {
6872 namtp->table[i] = cv_dup_inc(amtp->table[i]);
6876 else if (mg->mg_len == HEf_SVKEY)
6877 nmg->mg_ptr = (char*)sv_dup_inc((SV*)mg->mg_ptr);
6885 Perl_ptr_table_new(pTHX)
6888 Newz(0, tbl, 1, PTR_TBL_t);
6891 Newz(0, tbl->tbl_ary, tbl->tbl_max + 1, PTR_TBL_ENT_t*);
6896 Perl_ptr_table_fetch(pTHX_ PTR_TBL_t *tbl, void *sv)
6898 PTR_TBL_ENT_t *tblent;
6899 UV hash = PTR2UV(sv);
6901 tblent = tbl->tbl_ary[hash & tbl->tbl_max];
6902 for (; tblent; tblent = tblent->next) {
6903 if (tblent->oldval == sv)
6904 return tblent->newval;
6910 Perl_ptr_table_store(pTHX_ PTR_TBL_t *tbl, void *oldv, void *newv)
6912 PTR_TBL_ENT_t *tblent, **otblent;
6913 /* XXX this may be pessimal on platforms where pointers aren't good
6914 * hash values e.g. if they grow faster in the most significant
6916 UV hash = PTR2UV(oldv);
6920 otblent = &tbl->tbl_ary[hash & tbl->tbl_max];
6921 for (tblent = *otblent; tblent; i=0, tblent = tblent->next) {
6922 if (tblent->oldval == oldv) {
6923 tblent->newval = newv;
6928 Newz(0, tblent, 1, PTR_TBL_ENT_t);
6929 tblent->oldval = oldv;
6930 tblent->newval = newv;
6931 tblent->next = *otblent;
6934 if (i && tbl->tbl_items > tbl->tbl_max)
6935 ptr_table_split(tbl);
6939 Perl_ptr_table_split(pTHX_ PTR_TBL_t *tbl)
6941 PTR_TBL_ENT_t **ary = tbl->tbl_ary;
6942 UV oldsize = tbl->tbl_max + 1;
6943 UV newsize = oldsize * 2;
6946 Renew(ary, newsize, PTR_TBL_ENT_t*);
6947 Zero(&ary[oldsize], newsize-oldsize, PTR_TBL_ENT_t*);
6948 tbl->tbl_max = --newsize;
6950 for (i=0; i < oldsize; i++, ary++) {
6951 PTR_TBL_ENT_t **curentp, **entp, *ent;
6954 curentp = ary + oldsize;
6955 for (entp = ary, ent = *ary; ent; ent = *entp) {
6956 if ((newsize & PTR2UV(ent->oldval)) != i) {
6958 ent->next = *curentp;
6973 Perl_sv_dup(pTHX_ SV *sstr)
6977 if (!sstr || SvTYPE(sstr) == SVTYPEMASK)
6979 /* look for it in the table first */
6980 dstr = (SV*)ptr_table_fetch(PL_ptr_table, sstr);
6984 /* create anew and remember what it is */
6986 ptr_table_store(PL_ptr_table, sstr, dstr);
6989 SvFLAGS(dstr) = SvFLAGS(sstr);
6990 SvFLAGS(dstr) &= ~SVf_OOK; /* don't propagate OOK hack */
6991 SvREFCNT(dstr) = 0; /* must be before any other dups! */
6994 if (SvANY(sstr) && PL_watch_pvx && SvPVX(sstr) == PL_watch_pvx)
6995 PerlIO_printf(Perl_debug_log, "watch at %p hit, found string \"%s\"\n",
6996 PL_watch_pvx, SvPVX(sstr));
6999 switch (SvTYPE(sstr)) {
7004 SvANY(dstr) = new_XIV();
7005 SvIVX(dstr) = SvIVX(sstr);
7008 SvANY(dstr) = new_XNV();
7009 SvNVX(dstr) = SvNVX(sstr);
7012 SvANY(dstr) = new_XRV();
7013 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7016 SvANY(dstr) = new_XPV();
7017 SvCUR(dstr) = SvCUR(sstr);
7018 SvLEN(dstr) = SvLEN(sstr);
7020 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7021 else if (SvPVX(sstr) && SvLEN(sstr))
7022 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7024 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7027 SvANY(dstr) = new_XPVIV();
7028 SvCUR(dstr) = SvCUR(sstr);
7029 SvLEN(dstr) = SvLEN(sstr);
7030 SvIVX(dstr) = SvIVX(sstr);
7032 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7033 else if (SvPVX(sstr) && SvLEN(sstr))
7034 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7036 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7039 SvANY(dstr) = new_XPVNV();
7040 SvCUR(dstr) = SvCUR(sstr);
7041 SvLEN(dstr) = SvLEN(sstr);
7042 SvIVX(dstr) = SvIVX(sstr);
7043 SvNVX(dstr) = SvNVX(sstr);
7045 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7046 else if (SvPVX(sstr) && SvLEN(sstr))
7047 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7049 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7052 SvANY(dstr) = new_XPVMG();
7053 SvCUR(dstr) = SvCUR(sstr);
7054 SvLEN(dstr) = SvLEN(sstr);
7055 SvIVX(dstr) = SvIVX(sstr);
7056 SvNVX(dstr) = SvNVX(sstr);
7057 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7058 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7060 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7061 else if (SvPVX(sstr) && SvLEN(sstr))
7062 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7064 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7067 SvANY(dstr) = new_XPVBM();
7068 SvCUR(dstr) = SvCUR(sstr);
7069 SvLEN(dstr) = SvLEN(sstr);
7070 SvIVX(dstr) = SvIVX(sstr);
7071 SvNVX(dstr) = SvNVX(sstr);
7072 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7073 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7075 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7076 else if (SvPVX(sstr) && SvLEN(sstr))
7077 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7079 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7080 BmRARE(dstr) = BmRARE(sstr);
7081 BmUSEFUL(dstr) = BmUSEFUL(sstr);
7082 BmPREVIOUS(dstr)= BmPREVIOUS(sstr);
7085 SvANY(dstr) = new_XPVLV();
7086 SvCUR(dstr) = SvCUR(sstr);
7087 SvLEN(dstr) = SvLEN(sstr);
7088 SvIVX(dstr) = SvIVX(sstr);
7089 SvNVX(dstr) = SvNVX(sstr);
7090 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7091 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7093 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7094 else if (SvPVX(sstr) && SvLEN(sstr))
7095 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7097 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7098 LvTARGOFF(dstr) = LvTARGOFF(sstr); /* XXX sometimes holds PMOP* when DEBUGGING */
7099 LvTARGLEN(dstr) = LvTARGLEN(sstr);
7100 LvTARG(dstr) = sv_dup_inc(LvTARG(sstr));
7101 LvTYPE(dstr) = LvTYPE(sstr);
7104 SvANY(dstr) = new_XPVGV();
7105 SvCUR(dstr) = SvCUR(sstr);
7106 SvLEN(dstr) = SvLEN(sstr);
7107 SvIVX(dstr) = SvIVX(sstr);
7108 SvNVX(dstr) = SvNVX(sstr);
7109 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7110 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7112 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7113 else if (SvPVX(sstr) && SvLEN(sstr))
7114 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7116 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7117 GvNAMELEN(dstr) = GvNAMELEN(sstr);
7118 GvNAME(dstr) = SAVEPVN(GvNAME(sstr), GvNAMELEN(sstr));
7119 GvSTASH(dstr) = hv_dup_inc(GvSTASH(sstr));
7120 GvFLAGS(dstr) = GvFLAGS(sstr);
7121 GvGP(dstr) = gp_dup(GvGP(sstr));
7122 (void)GpREFCNT_inc(GvGP(dstr));
7125 SvANY(dstr) = new_XPVIO();
7126 SvCUR(dstr) = SvCUR(sstr);
7127 SvLEN(dstr) = SvLEN(sstr);
7128 SvIVX(dstr) = SvIVX(sstr);
7129 SvNVX(dstr) = SvNVX(sstr);
7130 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7131 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7133 SvRV(dstr) = sv_dup_inc(SvRV(sstr));
7134 else if (SvPVX(sstr) && SvLEN(sstr))
7135 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7137 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7138 IoIFP(dstr) = fp_dup(IoIFP(sstr), IoTYPE(sstr));
7139 if (IoOFP(sstr) == IoIFP(sstr))
7140 IoOFP(dstr) = IoIFP(dstr);
7142 IoOFP(dstr) = fp_dup(IoOFP(sstr), IoTYPE(sstr));
7143 /* PL_rsfp_filters entries have fake IoDIRP() */
7144 if (IoDIRP(sstr) && !(IoFLAGS(sstr) & IOf_FAKE_DIRP))
7145 IoDIRP(dstr) = dirp_dup(IoDIRP(sstr));
7147 IoDIRP(dstr) = IoDIRP(sstr);
7148 IoLINES(dstr) = IoLINES(sstr);
7149 IoPAGE(dstr) = IoPAGE(sstr);
7150 IoPAGE_LEN(dstr) = IoPAGE_LEN(sstr);
7151 IoLINES_LEFT(dstr) = IoLINES_LEFT(sstr);
7152 IoTOP_NAME(dstr) = SAVEPV(IoTOP_NAME(sstr));
7153 IoTOP_GV(dstr) = gv_dup(IoTOP_GV(sstr));
7154 IoFMT_NAME(dstr) = SAVEPV(IoFMT_NAME(sstr));
7155 IoFMT_GV(dstr) = gv_dup(IoFMT_GV(sstr));
7156 IoBOTTOM_NAME(dstr) = SAVEPV(IoBOTTOM_NAME(sstr));
7157 IoBOTTOM_GV(dstr) = gv_dup(IoBOTTOM_GV(sstr));
7158 IoSUBPROCESS(dstr) = IoSUBPROCESS(sstr);
7159 IoTYPE(dstr) = IoTYPE(sstr);
7160 IoFLAGS(dstr) = IoFLAGS(sstr);
7163 SvANY(dstr) = new_XPVAV();
7164 SvCUR(dstr) = SvCUR(sstr);
7165 SvLEN(dstr) = SvLEN(sstr);
7166 SvIVX(dstr) = SvIVX(sstr);
7167 SvNVX(dstr) = SvNVX(sstr);
7168 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7169 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7170 AvARYLEN((AV*)dstr) = sv_dup_inc(AvARYLEN((AV*)sstr));
7171 AvFLAGS((AV*)dstr) = AvFLAGS((AV*)sstr);
7172 if (AvARRAY((AV*)sstr)) {
7173 SV **dst_ary, **src_ary;
7174 SSize_t items = AvFILLp((AV*)sstr) + 1;
7176 src_ary = AvARRAY((AV*)sstr);
7177 Newz(0, dst_ary, AvMAX((AV*)sstr)+1, SV*);
7178 ptr_table_store(PL_ptr_table, src_ary, dst_ary);
7179 SvPVX(dstr) = (char*)dst_ary;
7180 AvALLOC((AV*)dstr) = dst_ary;
7181 if (AvREAL((AV*)sstr)) {
7183 *dst_ary++ = sv_dup_inc(*src_ary++);
7187 *dst_ary++ = sv_dup(*src_ary++);
7189 items = AvMAX((AV*)sstr) - AvFILLp((AV*)sstr);
7190 while (items-- > 0) {
7191 *dst_ary++ = &PL_sv_undef;
7195 SvPVX(dstr) = Nullch;
7196 AvALLOC((AV*)dstr) = (SV**)NULL;
7200 SvANY(dstr) = new_XPVHV();
7201 SvCUR(dstr) = SvCUR(sstr);
7202 SvLEN(dstr) = SvLEN(sstr);
7203 SvIVX(dstr) = SvIVX(sstr);
7204 SvNVX(dstr) = SvNVX(sstr);
7205 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7206 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7207 HvRITER((HV*)dstr) = HvRITER((HV*)sstr);
7208 if (HvARRAY((HV*)sstr)) {
7210 XPVHV *dxhv = (XPVHV*)SvANY(dstr);
7211 XPVHV *sxhv = (XPVHV*)SvANY(sstr);
7212 Newz(0, dxhv->xhv_array,
7213 PERL_HV_ARRAY_ALLOC_BYTES(dxhv->xhv_max+1), char);
7214 while (i <= sxhv->xhv_max) {
7215 ((HE**)dxhv->xhv_array)[i] = he_dup(((HE**)sxhv->xhv_array)[i],
7216 !!HvSHAREKEYS(sstr));
7219 dxhv->xhv_eiter = he_dup(sxhv->xhv_eiter, !!HvSHAREKEYS(sstr));
7222 SvPVX(dstr) = Nullch;
7223 HvEITER((HV*)dstr) = (HE*)NULL;
7225 HvPMROOT((HV*)dstr) = HvPMROOT((HV*)sstr); /* XXX */
7226 HvNAME((HV*)dstr) = SAVEPV(HvNAME((HV*)sstr));
7229 SvANY(dstr) = new_XPVFM();
7230 FmLINES(dstr) = FmLINES(sstr);
7234 SvANY(dstr) = new_XPVCV();
7236 SvCUR(dstr) = SvCUR(sstr);
7237 SvLEN(dstr) = SvLEN(sstr);
7238 SvIVX(dstr) = SvIVX(sstr);
7239 SvNVX(dstr) = SvNVX(sstr);
7240 SvMAGIC(dstr) = mg_dup(SvMAGIC(sstr));
7241 SvSTASH(dstr) = hv_dup_inc(SvSTASH(sstr));
7242 if (SvPVX(sstr) && SvLEN(sstr))
7243 SvPVX(dstr) = SAVEPVN(SvPVX(sstr), SvLEN(sstr)-1);
7245 SvPVX(dstr) = SvPVX(sstr); /* XXX shared string/random ptr? */
7246 CvSTASH(dstr) = hv_dup(CvSTASH(sstr));/* NOTE: not refcounted */
7247 CvSTART(dstr) = CvSTART(sstr);
7248 CvROOT(dstr) = OpREFCNT_inc(CvROOT(sstr));
7249 CvXSUB(dstr) = CvXSUB(sstr);
7250 CvXSUBANY(dstr) = CvXSUBANY(sstr);
7251 CvGV(dstr) = gv_dup_inc(CvGV(sstr));
7252 CvDEPTH(dstr) = CvDEPTH(sstr);
7253 if (CvPADLIST(sstr) && !AvREAL(CvPADLIST(sstr))) {
7254 /* XXX padlists are real, but pretend to be not */
7255 AvREAL_on(CvPADLIST(sstr));
7256 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7257 AvREAL_off(CvPADLIST(sstr));
7258 AvREAL_off(CvPADLIST(dstr));
7261 CvPADLIST(dstr) = av_dup_inc(CvPADLIST(sstr));
7262 CvOUTSIDE(dstr) = cv_dup_inc(CvOUTSIDE(sstr));
7263 CvFLAGS(dstr) = CvFLAGS(sstr);
7266 Perl_croak(aTHX_ "Bizarre SvTYPE [%d]", SvTYPE(sstr));
7270 if (SvOBJECT(dstr) && SvTYPE(dstr) != SVt_PVIO)
7277 Perl_cx_dup(pTHX_ PERL_CONTEXT *cxs, I32 ix, I32 max)
7282 return (PERL_CONTEXT*)NULL;
7284 /* look for it in the table first */
7285 ncxs = (PERL_CONTEXT*)ptr_table_fetch(PL_ptr_table, cxs);
7289 /* create anew and remember what it is */
7290 Newz(56, ncxs, max + 1, PERL_CONTEXT);
7291 ptr_table_store(PL_ptr_table, cxs, ncxs);
7294 PERL_CONTEXT *cx = &cxs[ix];
7295 PERL_CONTEXT *ncx = &ncxs[ix];
7296 ncx->cx_type = cx->cx_type;
7297 if (CxTYPE(cx) == CXt_SUBST) {
7298 Perl_croak(aTHX_ "Cloning substitution context is unimplemented");
7301 ncx->blk_oldsp = cx->blk_oldsp;
7302 ncx->blk_oldcop = cx->blk_oldcop;
7303 ncx->blk_oldretsp = cx->blk_oldretsp;
7304 ncx->blk_oldmarksp = cx->blk_oldmarksp;
7305 ncx->blk_oldscopesp = cx->blk_oldscopesp;
7306 ncx->blk_oldpm = cx->blk_oldpm;
7307 ncx->blk_gimme = cx->blk_gimme;
7308 switch (CxTYPE(cx)) {
7310 ncx->blk_sub.cv = (cx->blk_sub.olddepth == 0
7311 ? cv_dup_inc(cx->blk_sub.cv)
7312 : cv_dup(cx->blk_sub.cv));
7313 ncx->blk_sub.argarray = (cx->blk_sub.hasargs
7314 ? av_dup_inc(cx->blk_sub.argarray)
7316 ncx->blk_sub.savearray = av_dup(cx->blk_sub.savearray);
7317 ncx->blk_sub.olddepth = cx->blk_sub.olddepth;
7318 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7319 ncx->blk_sub.lval = cx->blk_sub.lval;
7322 ncx->blk_eval.old_in_eval = cx->blk_eval.old_in_eval;
7323 ncx->blk_eval.old_op_type = cx->blk_eval.old_op_type;
7324 ncx->blk_eval.old_namesv = sv_dup_inc(cx->blk_eval.old_namesv);
7325 ncx->blk_eval.old_eval_root = cx->blk_eval.old_eval_root;
7326 ncx->blk_eval.cur_text = sv_dup(cx->blk_eval.cur_text);
7329 ncx->blk_loop.label = cx->blk_loop.label;
7330 ncx->blk_loop.resetsp = cx->blk_loop.resetsp;
7331 ncx->blk_loop.redo_op = cx->blk_loop.redo_op;
7332 ncx->blk_loop.next_op = cx->blk_loop.next_op;
7333 ncx->blk_loop.last_op = cx->blk_loop.last_op;
7334 ncx->blk_loop.iterdata = (CxPADLOOP(cx)
7335 ? cx->blk_loop.iterdata
7336 : gv_dup((GV*)cx->blk_loop.iterdata));
7337 ncx->blk_loop.oldcurpad
7338 = (SV**)ptr_table_fetch(PL_ptr_table,
7339 cx->blk_loop.oldcurpad);
7340 ncx->blk_loop.itersave = sv_dup_inc(cx->blk_loop.itersave);
7341 ncx->blk_loop.iterlval = sv_dup_inc(cx->blk_loop.iterlval);
7342 ncx->blk_loop.iterary = av_dup_inc(cx->blk_loop.iterary);
7343 ncx->blk_loop.iterix = cx->blk_loop.iterix;
7344 ncx->blk_loop.itermax = cx->blk_loop.itermax;
7347 ncx->blk_sub.cv = cv_dup(cx->blk_sub.cv);
7348 ncx->blk_sub.gv = gv_dup(cx->blk_sub.gv);
7349 ncx->blk_sub.dfoutgv = gv_dup_inc(cx->blk_sub.dfoutgv);
7350 ncx->blk_sub.hasargs = cx->blk_sub.hasargs;
7363 Perl_si_dup(pTHX_ PERL_SI *si)
7368 return (PERL_SI*)NULL;
7370 /* look for it in the table first */
7371 nsi = (PERL_SI*)ptr_table_fetch(PL_ptr_table, si);
7375 /* create anew and remember what it is */
7376 Newz(56, nsi, 1, PERL_SI);
7377 ptr_table_store(PL_ptr_table, si, nsi);
7379 nsi->si_stack = av_dup_inc(si->si_stack);
7380 nsi->si_cxix = si->si_cxix;
7381 nsi->si_cxmax = si->si_cxmax;
7382 nsi->si_cxstack = cx_dup(si->si_cxstack, si->si_cxix, si->si_cxmax);
7383 nsi->si_type = si->si_type;
7384 nsi->si_prev = si_dup(si->si_prev);
7385 nsi->si_next = si_dup(si->si_next);
7386 nsi->si_markoff = si->si_markoff;
7391 #define POPINT(ss,ix) ((ss)[--(ix)].any_i32)
7392 #define TOPINT(ss,ix) ((ss)[ix].any_i32)
7393 #define POPLONG(ss,ix) ((ss)[--(ix)].any_long)
7394 #define TOPLONG(ss,ix) ((ss)[ix].any_long)
7395 #define POPIV(ss,ix) ((ss)[--(ix)].any_iv)
7396 #define TOPIV(ss,ix) ((ss)[ix].any_iv)
7397 #define POPPTR(ss,ix) ((ss)[--(ix)].any_ptr)
7398 #define TOPPTR(ss,ix) ((ss)[ix].any_ptr)
7399 #define POPDPTR(ss,ix) ((ss)[--(ix)].any_dptr)
7400 #define TOPDPTR(ss,ix) ((ss)[ix].any_dptr)
7401 #define POPDXPTR(ss,ix) ((ss)[--(ix)].any_dxptr)
7402 #define TOPDXPTR(ss,ix) ((ss)[ix].any_dxptr)
7405 #define pv_dup_inc(p) SAVEPV(p)
7406 #define pv_dup(p) SAVEPV(p)
7407 #define svp_dup_inc(p,pp) any_dup(p,pp)
7410 Perl_any_dup(pTHX_ void *v, PerlInterpreter *proto_perl)
7417 /* look for it in the table first */
7418 ret = ptr_table_fetch(PL_ptr_table, v);
7422 /* see if it is part of the interpreter structure */
7423 if (v >= (void*)proto_perl && v < (void*)(proto_perl+1))
7424 ret = (void*)(((char*)aTHXo) + (((char*)v) - (char*)proto_perl));
7432 Perl_ss_dup(pTHX_ PerlInterpreter *proto_perl)
7434 ANY *ss = proto_perl->Tsavestack;
7435 I32 ix = proto_perl->Tsavestack_ix;
7436 I32 max = proto_perl->Tsavestack_max;
7449 void (*dptr) (void*);
7450 void (*dxptr) (pTHXo_ void*);
7453 Newz(54, nss, max, ANY);
7459 case SAVEt_ITEM: /* normal string */
7460 sv = (SV*)POPPTR(ss,ix);
7461 TOPPTR(nss,ix) = sv_dup_inc(sv);
7462 sv = (SV*)POPPTR(ss,ix);
7463 TOPPTR(nss,ix) = sv_dup_inc(sv);
7465 case SAVEt_SV: /* scalar reference */
7466 sv = (SV*)POPPTR(ss,ix);
7467 TOPPTR(nss,ix) = sv_dup_inc(sv);
7468 gv = (GV*)POPPTR(ss,ix);
7469 TOPPTR(nss,ix) = gv_dup_inc(gv);
7471 case SAVEt_GENERIC_PVREF: /* generic char* */
7472 c = (char*)POPPTR(ss,ix);
7473 TOPPTR(nss,ix) = pv_dup(c);
7474 ptr = POPPTR(ss,ix);
7475 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7477 case SAVEt_GENERIC_SVREF: /* generic sv */
7478 case SAVEt_SVREF: /* scalar reference */
7479 sv = (SV*)POPPTR(ss,ix);
7480 TOPPTR(nss,ix) = sv_dup_inc(sv);
7481 ptr = POPPTR(ss,ix);
7482 TOPPTR(nss,ix) = svp_dup_inc((SV**)ptr, proto_perl);/* XXXXX */
7484 case SAVEt_AV: /* array reference */
7485 av = (AV*)POPPTR(ss,ix);
7486 TOPPTR(nss,ix) = av_dup_inc(av);
7487 gv = (GV*)POPPTR(ss,ix);
7488 TOPPTR(nss,ix) = gv_dup(gv);
7490 case SAVEt_HV: /* hash reference */
7491 hv = (HV*)POPPTR(ss,ix);
7492 TOPPTR(nss,ix) = hv_dup_inc(hv);
7493 gv = (GV*)POPPTR(ss,ix);
7494 TOPPTR(nss,ix) = gv_dup(gv);
7496 case SAVEt_INT: /* int reference */
7497 ptr = POPPTR(ss,ix);
7498 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7499 intval = (int)POPINT(ss,ix);
7500 TOPINT(nss,ix) = intval;
7502 case SAVEt_LONG: /* long reference */
7503 ptr = POPPTR(ss,ix);
7504 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7505 longval = (long)POPLONG(ss,ix);
7506 TOPLONG(nss,ix) = longval;
7508 case SAVEt_I32: /* I32 reference */
7509 case SAVEt_I16: /* I16 reference */
7510 case SAVEt_I8: /* I8 reference */
7511 ptr = POPPTR(ss,ix);
7512 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7516 case SAVEt_IV: /* IV reference */
7517 ptr = POPPTR(ss,ix);
7518 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7522 case SAVEt_SPTR: /* SV* reference */
7523 ptr = POPPTR(ss,ix);
7524 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7525 sv = (SV*)POPPTR(ss,ix);
7526 TOPPTR(nss,ix) = sv_dup(sv);
7528 case SAVEt_VPTR: /* random* reference */
7529 ptr = POPPTR(ss,ix);
7530 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7531 ptr = POPPTR(ss,ix);
7532 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7534 case SAVEt_PPTR: /* char* reference */
7535 ptr = POPPTR(ss,ix);
7536 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7537 c = (char*)POPPTR(ss,ix);
7538 TOPPTR(nss,ix) = pv_dup(c);
7540 case SAVEt_HPTR: /* HV* reference */
7541 ptr = POPPTR(ss,ix);
7542 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7543 hv = (HV*)POPPTR(ss,ix);
7544 TOPPTR(nss,ix) = hv_dup(hv);
7546 case SAVEt_APTR: /* AV* reference */
7547 ptr = POPPTR(ss,ix);
7548 TOPPTR(nss,ix) = any_dup(ptr, proto_perl);
7549 av = (AV*)POPPTR(ss,ix);
7550 TOPPTR(nss,ix) = av_dup(av);
7553 gv = (GV*)POPPTR(ss,ix);
7554 TOPPTR(nss,ix) = gv_dup(gv);
7556 case SAVEt_GP: /* scalar reference */
7557 gp = (GP*)POPPTR(ss,ix);
7558 TOPPTR(nss,ix) = gp = gp_dup(gp);
7559 (void)GpREFCNT_inc(gp);
7560 gv = (GV*)POPPTR(ss,ix);
7561 TOPPTR(nss,ix) = gv_dup_inc(c);
7562 c = (char*)POPPTR(ss,ix);
7563 TOPPTR(nss,ix) = pv_dup(c);
7570 sv = (SV*)POPPTR(ss,ix);
7571 TOPPTR(nss,ix) = sv_dup_inc(sv);
7574 ptr = POPPTR(ss,ix);
7575 if (ptr && (((OP*)ptr)->op_private & OPpREFCOUNTED)) {
7576 /* these are assumed to be refcounted properly */
7577 switch (((OP*)ptr)->op_type) {
7584 TOPPTR(nss,ix) = ptr;
7589 TOPPTR(nss,ix) = Nullop;
7594 TOPPTR(nss,ix) = Nullop;
7597 c = (char*)POPPTR(ss,ix);
7598 TOPPTR(nss,ix) = pv_dup_inc(c);
7601 longval = POPLONG(ss,ix);
7602 TOPLONG(nss,ix) = longval;
7605 hv = (HV*)POPPTR(ss,ix);
7606 TOPPTR(nss,ix) = hv_dup_inc(hv);
7607 c = (char*)POPPTR(ss,ix);
7608 TOPPTR(nss,ix) = pv_dup_inc(c);
7612 case SAVEt_DESTRUCTOR:
7613 ptr = POPPTR(ss,ix);
7614 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7615 dptr = POPDPTR(ss,ix);
7616 TOPDPTR(nss,ix) = (void (*)(void*))any_dup((void *)dptr, proto_perl);
7618 case SAVEt_DESTRUCTOR_X:
7619 ptr = POPPTR(ss,ix);
7620 TOPPTR(nss,ix) = any_dup(ptr, proto_perl); /* XXX quite arbitrary */
7621 dxptr = POPDXPTR(ss,ix);
7622 TOPDXPTR(nss,ix) = (void (*)(pTHXo_ void*))any_dup((void *)dxptr, proto_perl);
7624 case SAVEt_REGCONTEXT:
7630 case SAVEt_STACK_POS: /* Position on Perl stack */
7634 case SAVEt_AELEM: /* array element */
7635 sv = (SV*)POPPTR(ss,ix);
7636 TOPPTR(nss,ix) = sv_dup_inc(sv);
7639 av = (AV*)POPPTR(ss,ix);
7640 TOPPTR(nss,ix) = av_dup_inc(av);
7642 case SAVEt_HELEM: /* hash element */
7643 sv = (SV*)POPPTR(ss,ix);
7644 TOPPTR(nss,ix) = sv_dup_inc(sv);
7645 sv = (SV*)POPPTR(ss,ix);
7646 TOPPTR(nss,ix) = sv_dup_inc(sv);
7647 hv = (HV*)POPPTR(ss,ix);
7648 TOPPTR(nss,ix) = hv_dup_inc(hv);
7651 ptr = POPPTR(ss,ix);
7652 TOPPTR(nss,ix) = ptr;
7659 av = (AV*)POPPTR(ss,ix);
7660 TOPPTR(nss,ix) = av_dup(av);
7663 Perl_croak(aTHX_ "panic: ss_dup inconsistency");
7675 perl_clone(PerlInterpreter *proto_perl, UV flags)
7678 CPerlObj *pPerl = (CPerlObj*)proto_perl;
7681 #ifdef PERL_IMPLICIT_SYS
7682 return perl_clone_using(proto_perl, flags,
7684 proto_perl->IMemShared,
7685 proto_perl->IMemParse,
7695 perl_clone_using(PerlInterpreter *proto_perl, UV flags,
7696 struct IPerlMem* ipM, struct IPerlMem* ipMS,
7697 struct IPerlMem* ipMP, struct IPerlEnv* ipE,
7698 struct IPerlStdIO* ipStd, struct IPerlLIO* ipLIO,
7699 struct IPerlDir* ipD, struct IPerlSock* ipS,
7700 struct IPerlProc* ipP)
7702 /* XXX many of the string copies here can be optimized if they're
7703 * constants; they need to be allocated as common memory and just
7704 * their pointers copied. */
7708 CPerlObj *pPerl = new(ipM) CPerlObj(ipM, ipMS, ipMP, ipE, ipStd, ipLIO,
7710 PERL_SET_THX(pPerl);
7711 # else /* !PERL_OBJECT */
7712 PerlInterpreter *my_perl = (PerlInterpreter*)(*ipM->pMalloc)(ipM, sizeof(PerlInterpreter));
7713 PERL_SET_THX(my_perl);
7716 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7721 # else /* !DEBUGGING */
7722 Zero(my_perl, 1, PerlInterpreter);
7723 # endif /* DEBUGGING */
7727 PL_MemShared = ipMS;
7735 # endif /* PERL_OBJECT */
7736 #else /* !PERL_IMPLICIT_SYS */
7738 PerlInterpreter *my_perl = (PerlInterpreter*)PerlMem_malloc(sizeof(PerlInterpreter));
7739 PERL_SET_THX(my_perl);
7742 memset(my_perl, 0xab, sizeof(PerlInterpreter));
7747 # else /* !DEBUGGING */
7748 Zero(my_perl, 1, PerlInterpreter);
7749 # endif /* DEBUGGING */
7750 #endif /* PERL_IMPLICIT_SYS */
7753 PL_xiv_arenaroot = NULL;
7755 PL_xnv_arenaroot = NULL;
7757 PL_xrv_arenaroot = NULL;
7759 PL_xpv_arenaroot = NULL;
7761 PL_xpviv_arenaroot = NULL;
7762 PL_xpviv_root = NULL;
7763 PL_xpvnv_arenaroot = NULL;
7764 PL_xpvnv_root = NULL;
7765 PL_xpvcv_arenaroot = NULL;
7766 PL_xpvcv_root = NULL;
7767 PL_xpvav_arenaroot = NULL;
7768 PL_xpvav_root = NULL;
7769 PL_xpvhv_arenaroot = NULL;
7770 PL_xpvhv_root = NULL;
7771 PL_xpvmg_arenaroot = NULL;
7772 PL_xpvmg_root = NULL;
7773 PL_xpvlv_arenaroot = NULL;
7774 PL_xpvlv_root = NULL;
7775 PL_xpvbm_arenaroot = NULL;
7776 PL_xpvbm_root = NULL;
7777 PL_he_arenaroot = NULL;
7779 PL_nice_chunk = NULL;
7780 PL_nice_chunk_size = 0;
7783 PL_sv_root = Nullsv;
7784 PL_sv_arenaroot = Nullsv;
7786 PL_debug = proto_perl->Idebug;
7788 /* create SV map for pointer relocation */
7789 PL_ptr_table = ptr_table_new();
7791 /* initialize these special pointers as early as possible */
7792 SvANY(&PL_sv_undef) = NULL;
7793 SvREFCNT(&PL_sv_undef) = (~(U32)0)/2;
7794 SvFLAGS(&PL_sv_undef) = SVf_READONLY|SVt_NULL;
7795 ptr_table_store(PL_ptr_table, &proto_perl->Isv_undef, &PL_sv_undef);
7798 SvUPGRADE(&PL_sv_no, SVt_PVNV);
7800 SvANY(&PL_sv_no) = new_XPVNV();
7802 SvREFCNT(&PL_sv_no) = (~(U32)0)/2;
7803 SvFLAGS(&PL_sv_no) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7804 SvPVX(&PL_sv_no) = SAVEPVN(PL_No, 0);
7805 SvCUR(&PL_sv_no) = 0;
7806 SvLEN(&PL_sv_no) = 1;
7807 SvNVX(&PL_sv_no) = 0;
7808 ptr_table_store(PL_ptr_table, &proto_perl->Isv_no, &PL_sv_no);
7811 SvUPGRADE(&PL_sv_yes, SVt_PVNV);
7813 SvANY(&PL_sv_yes) = new_XPVNV();
7815 SvREFCNT(&PL_sv_yes) = (~(U32)0)/2;
7816 SvFLAGS(&PL_sv_yes) = SVp_NOK|SVf_NOK|SVp_POK|SVf_POK|SVf_READONLY|SVt_PVNV;
7817 SvPVX(&PL_sv_yes) = SAVEPVN(PL_Yes, 1);
7818 SvCUR(&PL_sv_yes) = 1;
7819 SvLEN(&PL_sv_yes) = 2;
7820 SvNVX(&PL_sv_yes) = 1;
7821 ptr_table_store(PL_ptr_table, &proto_perl->Isv_yes, &PL_sv_yes);
7823 /* create shared string table */
7824 PL_strtab = newHV();
7825 HvSHAREKEYS_off(PL_strtab);
7826 hv_ksplit(PL_strtab, 512);
7827 ptr_table_store(PL_ptr_table, proto_perl->Istrtab, PL_strtab);
7829 PL_compiling = proto_perl->Icompiling;
7830 PL_compiling.cop_stashpv = SAVEPV(PL_compiling.cop_stashpv);
7831 PL_compiling.cop_file = SAVEPV(PL_compiling.cop_file);
7832 ptr_table_store(PL_ptr_table, &proto_perl->Icompiling, &PL_compiling);
7833 if (!specialWARN(PL_compiling.cop_warnings))
7834 PL_compiling.cop_warnings = sv_dup_inc(PL_compiling.cop_warnings);
7835 PL_curcop = (COP*)any_dup(proto_perl->Tcurcop, proto_perl);
7837 /* pseudo environmental stuff */
7838 PL_origargc = proto_perl->Iorigargc;
7840 New(0, PL_origargv, i+1, char*);
7841 PL_origargv[i] = '\0';
7843 PL_origargv[i] = SAVEPV(proto_perl->Iorigargv[i]);
7845 PL_envgv = gv_dup(proto_perl->Ienvgv);
7846 PL_incgv = gv_dup(proto_perl->Iincgv);
7847 PL_hintgv = gv_dup(proto_perl->Ihintgv);
7848 PL_origfilename = SAVEPV(proto_perl->Iorigfilename);
7849 PL_diehook = sv_dup_inc(proto_perl->Idiehook);
7850 PL_warnhook = sv_dup_inc(proto_perl->Iwarnhook);
7853 PL_minus_c = proto_perl->Iminus_c;
7854 PL_patchlevel = sv_dup_inc(proto_perl->Ipatchlevel);
7855 PL_localpatches = proto_perl->Ilocalpatches;
7856 PL_splitstr = proto_perl->Isplitstr;
7857 PL_preprocess = proto_perl->Ipreprocess;
7858 PL_minus_n = proto_perl->Iminus_n;
7859 PL_minus_p = proto_perl->Iminus_p;
7860 PL_minus_l = proto_perl->Iminus_l;
7861 PL_minus_a = proto_perl->Iminus_a;
7862 PL_minus_F = proto_perl->Iminus_F;
7863 PL_doswitches = proto_perl->Idoswitches;
7864 PL_dowarn = proto_perl->Idowarn;
7865 PL_doextract = proto_perl->Idoextract;
7866 PL_sawampersand = proto_perl->Isawampersand;
7867 PL_unsafe = proto_perl->Iunsafe;
7868 PL_inplace = SAVEPV(proto_perl->Iinplace);
7869 PL_e_script = sv_dup_inc(proto_perl->Ie_script);
7870 PL_perldb = proto_perl->Iperldb;
7871 PL_perl_destruct_level = proto_perl->Iperl_destruct_level;
7873 /* magical thingies */
7874 /* XXX time(&PL_basetime) when asked for? */
7875 PL_basetime = proto_perl->Ibasetime;
7876 PL_formfeed = sv_dup(proto_perl->Iformfeed);
7878 PL_maxsysfd = proto_perl->Imaxsysfd;
7879 PL_multiline = proto_perl->Imultiline;
7880 PL_statusvalue = proto_perl->Istatusvalue;
7882 PL_statusvalue_vms = proto_perl->Istatusvalue_vms;
7885 /* shortcuts to various I/O objects */
7886 PL_stdingv = gv_dup(proto_perl->Istdingv);
7887 PL_stderrgv = gv_dup(proto_perl->Istderrgv);
7888 PL_defgv = gv_dup(proto_perl->Idefgv);
7889 PL_argvgv = gv_dup(proto_perl->Iargvgv);
7890 PL_argvoutgv = gv_dup(proto_perl->Iargvoutgv);
7891 PL_argvout_stack = av_dup(proto_perl->Iargvout_stack);
7893 /* shortcuts to regexp stuff */
7894 PL_replgv = gv_dup(proto_perl->Ireplgv);
7896 /* shortcuts to misc objects */
7897 PL_errgv = gv_dup(proto_perl->Ierrgv);
7899 /* shortcuts to debugging objects */
7900 PL_DBgv = gv_dup(proto_perl->IDBgv);
7901 PL_DBline = gv_dup(proto_perl->IDBline);
7902 PL_DBsub = gv_dup(proto_perl->IDBsub);
7903 PL_DBsingle = sv_dup(proto_perl->IDBsingle);
7904 PL_DBtrace = sv_dup(proto_perl->IDBtrace);
7905 PL_DBsignal = sv_dup(proto_perl->IDBsignal);
7906 PL_lineary = av_dup(proto_perl->Ilineary);
7907 PL_dbargs = av_dup(proto_perl->Idbargs);
7910 PL_defstash = hv_dup_inc(proto_perl->Tdefstash);
7911 PL_curstash = hv_dup(proto_perl->Tcurstash);
7912 PL_debstash = hv_dup(proto_perl->Idebstash);
7913 PL_globalstash = hv_dup(proto_perl->Iglobalstash);
7914 PL_curstname = sv_dup_inc(proto_perl->Icurstname);
7916 PL_beginav = av_dup_inc(proto_perl->Ibeginav);
7917 PL_endav = av_dup_inc(proto_perl->Iendav);
7918 PL_checkav = av_dup_inc(proto_perl->Icheckav);
7919 PL_initav = av_dup_inc(proto_perl->Iinitav);
7921 PL_sub_generation = proto_perl->Isub_generation;
7923 /* funky return mechanisms */
7924 PL_forkprocess = proto_perl->Iforkprocess;
7926 /* subprocess state */
7927 PL_fdpid = av_dup_inc(proto_perl->Ifdpid);
7929 /* internal state */
7930 PL_tainting = proto_perl->Itainting;
7931 PL_maxo = proto_perl->Imaxo;
7932 if (proto_perl->Iop_mask)
7933 PL_op_mask = SAVEPVN(proto_perl->Iop_mask, PL_maxo);
7935 PL_op_mask = Nullch;
7937 /* current interpreter roots */
7938 PL_main_cv = cv_dup_inc(proto_perl->Imain_cv);
7939 PL_main_root = OpREFCNT_inc(proto_perl->Imain_root);
7940 PL_main_start = proto_perl->Imain_start;
7941 PL_eval_root = proto_perl->Ieval_root;
7942 PL_eval_start = proto_perl->Ieval_start;
7944 /* runtime control stuff */
7945 PL_curcopdb = (COP*)any_dup(proto_perl->Icurcopdb, proto_perl);
7946 PL_copline = proto_perl->Icopline;
7948 PL_filemode = proto_perl->Ifilemode;
7949 PL_lastfd = proto_perl->Ilastfd;
7950 PL_oldname = proto_perl->Ioldname; /* XXX not quite right */
7953 PL_gensym = proto_perl->Igensym;
7954 PL_preambled = proto_perl->Ipreambled;
7955 PL_preambleav = av_dup_inc(proto_perl->Ipreambleav);
7956 PL_laststatval = proto_perl->Ilaststatval;
7957 PL_laststype = proto_perl->Ilaststype;
7958 PL_mess_sv = Nullsv;
7960 PL_orslen = proto_perl->Iorslen;
7961 PL_ors = SAVEPVN(proto_perl->Iors, PL_orslen);
7962 PL_ofmt = SAVEPV(proto_perl->Iofmt);
7964 /* interpreter atexit processing */
7965 PL_exitlistlen = proto_perl->Iexitlistlen;
7966 if (PL_exitlistlen) {
7967 New(0, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7968 Copy(proto_perl->Iexitlist, PL_exitlist, PL_exitlistlen, PerlExitListEntry);
7971 PL_exitlist = (PerlExitListEntry*)NULL;
7972 PL_modglobal = hv_dup_inc(proto_perl->Imodglobal);
7974 PL_profiledata = NULL;
7975 PL_rsfp = fp_dup(proto_perl->Irsfp, '<');
7976 /* PL_rsfp_filters entries have fake IoDIRP() */
7977 PL_rsfp_filters = av_dup_inc(proto_perl->Irsfp_filters);
7979 PL_compcv = cv_dup(proto_perl->Icompcv);
7980 PL_comppad = av_dup(proto_perl->Icomppad);
7981 PL_comppad_name = av_dup(proto_perl->Icomppad_name);
7982 PL_comppad_name_fill = proto_perl->Icomppad_name_fill;
7983 PL_comppad_name_floor = proto_perl->Icomppad_name_floor;
7984 PL_curpad = (SV**)ptr_table_fetch(PL_ptr_table,
7985 proto_perl->Tcurpad);
7987 #ifdef HAVE_INTERP_INTERN
7988 sys_intern_dup(&proto_perl->Isys_intern, &PL_sys_intern);
7991 /* more statics moved here */
7992 PL_generation = proto_perl->Igeneration;
7993 PL_DBcv = cv_dup(proto_perl->IDBcv);
7995 PL_in_clean_objs = proto_perl->Iin_clean_objs;
7996 PL_in_clean_all = proto_perl->Iin_clean_all;
7998 PL_uid = proto_perl->Iuid;
7999 PL_euid = proto_perl->Ieuid;
8000 PL_gid = proto_perl->Igid;
8001 PL_egid = proto_perl->Iegid;
8002 PL_nomemok = proto_perl->Inomemok;
8003 PL_an = proto_perl->Ian;
8004 PL_cop_seqmax = proto_perl->Icop_seqmax;
8005 PL_op_seqmax = proto_perl->Iop_seqmax;
8006 PL_evalseq = proto_perl->Ievalseq;
8007 PL_origenviron = proto_perl->Iorigenviron; /* XXX not quite right */
8008 PL_origalen = proto_perl->Iorigalen;
8009 PL_pidstatus = newHV(); /* XXX flag for cloning? */
8010 PL_osname = SAVEPV(proto_perl->Iosname);
8011 PL_sh_path = SAVEPV(proto_perl->Ish_path);
8012 PL_sighandlerp = proto_perl->Isighandlerp;
8015 PL_runops = proto_perl->Irunops;
8017 Copy(proto_perl->Itokenbuf, PL_tokenbuf, 256, char);
8020 PL_cshlen = proto_perl->Icshlen;
8021 PL_cshname = SAVEPVN(proto_perl->Icshname, PL_cshlen);
8024 PL_lex_state = proto_perl->Ilex_state;
8025 PL_lex_defer = proto_perl->Ilex_defer;
8026 PL_lex_expect = proto_perl->Ilex_expect;
8027 PL_lex_formbrack = proto_perl->Ilex_formbrack;
8028 PL_lex_dojoin = proto_perl->Ilex_dojoin;
8029 PL_lex_starts = proto_perl->Ilex_starts;
8030 PL_lex_stuff = sv_dup_inc(proto_perl->Ilex_stuff);
8031 PL_lex_repl = sv_dup_inc(proto_perl->Ilex_repl);
8032 PL_lex_op = proto_perl->Ilex_op;
8033 PL_lex_inpat = proto_perl->Ilex_inpat;
8034 PL_lex_inwhat = proto_perl->Ilex_inwhat;
8035 PL_lex_brackets = proto_perl->Ilex_brackets;
8036 i = (PL_lex_brackets < 120 ? 120 : PL_lex_brackets);
8037 PL_lex_brackstack = SAVEPVN(proto_perl->Ilex_brackstack,i);
8038 PL_lex_casemods = proto_perl->Ilex_casemods;
8039 i = (PL_lex_casemods < 12 ? 12 : PL_lex_casemods);
8040 PL_lex_casestack = SAVEPVN(proto_perl->Ilex_casestack,i);
8042 Copy(proto_perl->Inextval, PL_nextval, 5, YYSTYPE);
8043 Copy(proto_perl->Inexttype, PL_nexttype, 5, I32);
8044 PL_nexttoke = proto_perl->Inexttoke;
8046 PL_linestr = sv_dup_inc(proto_perl->Ilinestr);
8047 i = proto_perl->Ibufptr - SvPVX(proto_perl->Ilinestr);
8048 PL_bufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8049 i = proto_perl->Ioldbufptr - SvPVX(proto_perl->Ilinestr);
8050 PL_oldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8051 i = proto_perl->Ioldoldbufptr - SvPVX(proto_perl->Ilinestr);
8052 PL_oldoldbufptr = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8053 PL_bufend = SvPVX(PL_linestr) + SvCUR(PL_linestr);
8054 i = proto_perl->Ilinestart - SvPVX(proto_perl->Ilinestr);
8055 PL_linestart = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8056 PL_pending_ident = proto_perl->Ipending_ident;
8057 PL_sublex_info = proto_perl->Isublex_info; /* XXX not quite right */
8059 PL_expect = proto_perl->Iexpect;
8061 PL_multi_start = proto_perl->Imulti_start;
8062 PL_multi_end = proto_perl->Imulti_end;
8063 PL_multi_open = proto_perl->Imulti_open;
8064 PL_multi_close = proto_perl->Imulti_close;
8066 PL_error_count = proto_perl->Ierror_count;
8067 PL_subline = proto_perl->Isubline;
8068 PL_subname = sv_dup_inc(proto_perl->Isubname);
8070 PL_min_intro_pending = proto_perl->Imin_intro_pending;
8071 PL_max_intro_pending = proto_perl->Imax_intro_pending;
8072 PL_padix = proto_perl->Ipadix;
8073 PL_padix_floor = proto_perl->Ipadix_floor;
8074 PL_pad_reset_pending = proto_perl->Ipad_reset_pending;
8076 i = proto_perl->Ilast_uni - SvPVX(proto_perl->Ilinestr);
8077 PL_last_uni = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8078 i = proto_perl->Ilast_lop - SvPVX(proto_perl->Ilinestr);
8079 PL_last_lop = SvPVX(PL_linestr) + (i < 0 ? 0 : i);
8080 PL_last_lop_op = proto_perl->Ilast_lop_op;
8081 PL_in_my = proto_perl->Iin_my;
8082 PL_in_my_stash = hv_dup(proto_perl->Iin_my_stash);
8084 PL_cryptseen = proto_perl->Icryptseen;
8087 PL_hints = proto_perl->Ihints;
8089 PL_amagic_generation = proto_perl->Iamagic_generation;
8091 #ifdef USE_LOCALE_COLLATE
8092 PL_collation_ix = proto_perl->Icollation_ix;
8093 PL_collation_name = SAVEPV(proto_perl->Icollation_name);
8094 PL_collation_standard = proto_perl->Icollation_standard;
8095 PL_collxfrm_base = proto_perl->Icollxfrm_base;
8096 PL_collxfrm_mult = proto_perl->Icollxfrm_mult;
8097 #endif /* USE_LOCALE_COLLATE */
8099 #ifdef USE_LOCALE_NUMERIC
8100 PL_numeric_name = SAVEPV(proto_perl->Inumeric_name);
8101 PL_numeric_standard = proto_perl->Inumeric_standard;
8102 PL_numeric_local = proto_perl->Inumeric_local;
8103 PL_numeric_radix = proto_perl->Inumeric_radix;
8104 #endif /* !USE_LOCALE_NUMERIC */
8106 /* utf8 character classes */
8107 PL_utf8_alnum = sv_dup_inc(proto_perl->Iutf8_alnum);
8108 PL_utf8_alnumc = sv_dup_inc(proto_perl->Iutf8_alnumc);
8109 PL_utf8_ascii = sv_dup_inc(proto_perl->Iutf8_ascii);
8110 PL_utf8_alpha = sv_dup_inc(proto_perl->Iutf8_alpha);
8111 PL_utf8_space = sv_dup_inc(proto_perl->Iutf8_space);
8112 PL_utf8_cntrl = sv_dup_inc(proto_perl->Iutf8_cntrl);
8113 PL_utf8_graph = sv_dup_inc(proto_perl->Iutf8_graph);
8114 PL_utf8_digit = sv_dup_inc(proto_perl->Iutf8_digit);
8115 PL_utf8_upper = sv_dup_inc(proto_perl->Iutf8_upper);
8116 PL_utf8_lower = sv_dup_inc(proto_perl->Iutf8_lower);
8117 PL_utf8_print = sv_dup_inc(proto_perl->Iutf8_print);
8118 PL_utf8_punct = sv_dup_inc(proto_perl->Iutf8_punct);
8119 PL_utf8_xdigit = sv_dup_inc(proto_perl->Iutf8_xdigit);
8120 PL_utf8_mark = sv_dup_inc(proto_perl->Iutf8_mark);
8121 PL_utf8_toupper = sv_dup_inc(proto_perl->Iutf8_toupper);
8122 PL_utf8_totitle = sv_dup_inc(proto_perl->Iutf8_totitle);
8123 PL_utf8_tolower = sv_dup_inc(proto_perl->Iutf8_tolower);
8126 PL_last_swash_hv = Nullhv; /* reinits on demand */
8127 PL_last_swash_klen = 0;
8128 PL_last_swash_key[0]= '\0';
8129 PL_last_swash_tmps = (U8*)NULL;
8130 PL_last_swash_slen = 0;
8132 /* perly.c globals */
8133 PL_yydebug = proto_perl->Iyydebug;
8134 PL_yynerrs = proto_perl->Iyynerrs;
8135 PL_yyerrflag = proto_perl->Iyyerrflag;
8136 PL_yychar = proto_perl->Iyychar;
8137 PL_yyval = proto_perl->Iyyval;
8138 PL_yylval = proto_perl->Iyylval;
8140 PL_glob_index = proto_perl->Iglob_index;
8141 PL_srand_called = proto_perl->Isrand_called;
8142 PL_uudmap['M'] = 0; /* reinits on demand */
8143 PL_bitcount = Nullch; /* reinits on demand */
8145 if (proto_perl->Ipsig_ptr) {
8146 int sig_num[] = { SIG_NUM };
8147 Newz(0, PL_psig_ptr, sizeof(sig_num)/sizeof(*sig_num), SV*);
8148 Newz(0, PL_psig_name, sizeof(sig_num)/sizeof(*sig_num), SV*);
8149 for (i = 1; PL_sig_name[i]; i++) {
8150 PL_psig_ptr[i] = sv_dup_inc(proto_perl->Ipsig_ptr[i]);
8151 PL_psig_name[i] = sv_dup_inc(proto_perl->Ipsig_name[i]);
8155 PL_psig_ptr = (SV**)NULL;
8156 PL_psig_name = (SV**)NULL;
8159 /* thrdvar.h stuff */
8162 /* next allocation will be PL_tmps_stack[PL_tmps_ix+1] */
8163 PL_tmps_ix = proto_perl->Ttmps_ix;
8164 PL_tmps_max = proto_perl->Ttmps_max;
8165 PL_tmps_floor = proto_perl->Ttmps_floor;
8166 Newz(50, PL_tmps_stack, PL_tmps_max, SV*);
8168 while (i <= PL_tmps_ix) {
8169 PL_tmps_stack[i] = sv_dup_inc(proto_perl->Ttmps_stack[i]);
8173 /* next PUSHMARK() sets *(PL_markstack_ptr+1) */
8174 i = proto_perl->Tmarkstack_max - proto_perl->Tmarkstack;
8175 Newz(54, PL_markstack, i, I32);
8176 PL_markstack_max = PL_markstack + (proto_perl->Tmarkstack_max
8177 - proto_perl->Tmarkstack);
8178 PL_markstack_ptr = PL_markstack + (proto_perl->Tmarkstack_ptr
8179 - proto_perl->Tmarkstack);
8180 Copy(proto_perl->Tmarkstack, PL_markstack,
8181 PL_markstack_ptr - PL_markstack + 1, I32);
8183 /* next push_scope()/ENTER sets PL_scopestack[PL_scopestack_ix]
8184 * NOTE: unlike the others! */
8185 PL_scopestack_ix = proto_perl->Tscopestack_ix;
8186 PL_scopestack_max = proto_perl->Tscopestack_max;
8187 Newz(54, PL_scopestack, PL_scopestack_max, I32);
8188 Copy(proto_perl->Tscopestack, PL_scopestack, PL_scopestack_ix, I32);
8190 /* next push_return() sets PL_retstack[PL_retstack_ix]
8191 * NOTE: unlike the others! */
8192 PL_retstack_ix = proto_perl->Tretstack_ix;
8193 PL_retstack_max = proto_perl->Tretstack_max;
8194 Newz(54, PL_retstack, PL_retstack_max, OP*);
8195 Copy(proto_perl->Tretstack, PL_retstack, PL_retstack_ix, I32);
8197 /* NOTE: si_dup() looks at PL_markstack */
8198 PL_curstackinfo = si_dup(proto_perl->Tcurstackinfo);
8200 /* PL_curstack = PL_curstackinfo->si_stack; */
8201 PL_curstack = av_dup(proto_perl->Tcurstack);
8202 PL_mainstack = av_dup(proto_perl->Tmainstack);
8204 /* next PUSHs() etc. set *(PL_stack_sp+1) */
8205 PL_stack_base = AvARRAY(PL_curstack);
8206 PL_stack_sp = PL_stack_base + (proto_perl->Tstack_sp
8207 - proto_perl->Tstack_base);
8208 PL_stack_max = PL_stack_base + AvMAX(PL_curstack);
8210 /* next SSPUSHFOO() sets PL_savestack[PL_savestack_ix]
8211 * NOTE: unlike the others! */
8212 PL_savestack_ix = proto_perl->Tsavestack_ix;
8213 PL_savestack_max = proto_perl->Tsavestack_max;
8214 /*Newz(54, PL_savestack, PL_savestack_max, ANY);*/
8215 PL_savestack = ss_dup(proto_perl);
8219 ENTER; /* perl_destruct() wants to LEAVE; */
8222 PL_start_env = proto_perl->Tstart_env; /* XXXXXX */
8223 PL_top_env = &PL_start_env;
8225 PL_op = proto_perl->Top;
8228 PL_Xpv = (XPV*)NULL;
8229 PL_na = proto_perl->Tna;
8231 PL_statbuf = proto_perl->Tstatbuf;
8232 PL_statcache = proto_perl->Tstatcache;
8233 PL_statgv = gv_dup(proto_perl->Tstatgv);
8234 PL_statname = sv_dup_inc(proto_perl->Tstatname);
8236 PL_timesbuf = proto_perl->Ttimesbuf;
8239 PL_tainted = proto_perl->Ttainted;
8240 PL_curpm = proto_perl->Tcurpm; /* XXX No PMOP ref count */
8241 PL_nrs = sv_dup_inc(proto_perl->Tnrs);
8242 PL_rs = sv_dup_inc(proto_perl->Trs);
8243 PL_last_in_gv = gv_dup(proto_perl->Tlast_in_gv);
8244 PL_ofslen = proto_perl->Tofslen;
8245 PL_ofs = SAVEPVN(proto_perl->Tofs, PL_ofslen);
8246 PL_defoutgv = gv_dup_inc(proto_perl->Tdefoutgv);
8247 PL_chopset = proto_perl->Tchopset; /* XXX never deallocated */
8248 PL_toptarget = sv_dup_inc(proto_perl->Ttoptarget);
8249 PL_bodytarget = sv_dup_inc(proto_perl->Tbodytarget);
8250 PL_formtarget = sv_dup(proto_perl->Tformtarget);
8252 PL_restartop = proto_perl->Trestartop;
8253 PL_in_eval = proto_perl->Tin_eval;
8254 PL_delaymagic = proto_perl->Tdelaymagic;
8255 PL_dirty = proto_perl->Tdirty;
8256 PL_localizing = proto_perl->Tlocalizing;
8258 #ifdef PERL_FLEXIBLE_EXCEPTIONS
8259 PL_protect = proto_perl->Tprotect;
8261 PL_errors = sv_dup_inc(proto_perl->Terrors);
8262 PL_av_fetch_sv = Nullsv;
8263 PL_hv_fetch_sv = Nullsv;
8264 Zero(&PL_hv_fetch_ent_mh, 1, HE); /* XXX */
8265 PL_modcount = proto_perl->Tmodcount;
8266 PL_lastgotoprobe = Nullop;
8267 PL_dumpindent = proto_perl->Tdumpindent;
8269 PL_sortcop = (OP*)any_dup(proto_perl->Tsortcop, proto_perl);
8270 PL_sortstash = hv_dup(proto_perl->Tsortstash);
8271 PL_firstgv = gv_dup(proto_perl->Tfirstgv);
8272 PL_secondgv = gv_dup(proto_perl->Tsecondgv);
8273 PL_sortcxix = proto_perl->Tsortcxix;
8274 PL_efloatbuf = Nullch; /* reinits on demand */
8275 PL_efloatsize = 0; /* reinits on demand */
8279 PL_screamfirst = NULL;
8280 PL_screamnext = NULL;
8281 PL_maxscream = -1; /* reinits on demand */
8282 PL_lastscream = Nullsv;
8284 PL_watchaddr = NULL;
8285 PL_watchok = Nullch;
8287 PL_regdummy = proto_perl->Tregdummy;
8288 PL_regcomp_parse = Nullch;
8289 PL_regxend = Nullch;
8290 PL_regcode = (regnode*)NULL;
8293 PL_regprecomp = Nullch;
8298 PL_seen_zerolen = 0;
8300 PL_regcomp_rx = (regexp*)NULL;
8302 PL_colorset = 0; /* reinits PL_colors[] */
8303 /*PL_colors[6] = {0,0,0,0,0,0};*/
8304 PL_reg_whilem_seen = 0;
8305 PL_reginput = Nullch;
8308 PL_regstartp = (I32*)NULL;
8309 PL_regendp = (I32*)NULL;
8310 PL_reglastparen = (U32*)NULL;
8311 PL_regtill = Nullch;
8313 PL_reg_start_tmp = (char**)NULL;
8314 PL_reg_start_tmpl = 0;
8315 PL_regdata = (struct reg_data*)NULL;
8318 PL_reg_eval_set = 0;
8320 PL_regprogram = (regnode*)NULL;
8322 PL_regcc = (CURCUR*)NULL;
8323 PL_reg_call_cc = (struct re_cc_state*)NULL;
8324 PL_reg_re = (regexp*)NULL;
8325 PL_reg_ganch = Nullch;
8327 PL_reg_magic = (MAGIC*)NULL;
8329 PL_reg_oldcurpm = (PMOP*)NULL;
8330 PL_reg_curpm = (PMOP*)NULL;
8331 PL_reg_oldsaved = Nullch;
8332 PL_reg_oldsavedlen = 0;
8334 PL_reg_leftiter = 0;
8335 PL_reg_poscache = Nullch;
8336 PL_reg_poscache_size= 0;
8338 /* RE engine - function pointers */
8339 PL_regcompp = proto_perl->Tregcompp;
8340 PL_regexecp = proto_perl->Tregexecp;
8341 PL_regint_start = proto_perl->Tregint_start;
8342 PL_regint_string = proto_perl->Tregint_string;
8343 PL_regfree = proto_perl->Tregfree;
8345 PL_reginterp_cnt = 0;
8346 PL_reg_starttry = 0;
8349 return (PerlInterpreter*)pPerl;
8355 #else /* !USE_ITHREADS */
8361 #endif /* USE_ITHREADS */
8364 do_report_used(pTHXo_ SV *sv)
8366 if (SvTYPE(sv) != SVTYPEMASK) {
8367 PerlIO_printf(Perl_debug_log, "****\n");
8373 do_clean_objs(pTHXo_ SV *sv)
8377 if (SvROK(sv) && SvOBJECT(rv = SvRV(sv))) {
8378 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning object ref:\n "), sv_dump(sv));)
8379 if (SvWEAKREF(sv)) {
8390 /* XXX Might want to check arrays, etc. */
8393 #ifndef DISABLE_DESTRUCTOR_KLUDGE
8395 do_clean_named_objs(pTHXo_ SV *sv)
8397 if (SvTYPE(sv) == SVt_PVGV && GvGP(sv)) {
8398 if ( SvOBJECT(GvSV(sv)) ||
8399 (GvAV(sv) && SvOBJECT(GvAV(sv))) ||
8400 (GvHV(sv) && SvOBJECT(GvHV(sv))) ||
8401 (GvIO(sv) && SvOBJECT(GvIO(sv))) ||
8402 (GvCV(sv) && SvOBJECT(GvCV(sv))) )
8404 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning named glob object:\n "), sv_dump(sv));)
8412 do_clean_all(pTHXo_ SV *sv)
8414 DEBUG_D((PerlIO_printf(Perl_debug_log, "Cleaning loops: SV at 0x%"UVxf"\n", PTR2UV(sv)) );)
8415 SvFLAGS(sv) |= SVf_BREAK;